Abrus precatorius Abrus precatorius, known commonly as jequirity, Crab's eye, rosary pea, precatory pea or bean, John Crow B...
Abutilon indicum Abutilon indicum (Indian Abutilon, Indian Mallow; is a small shrub in the Malvaceae family, native to tropic and subtropical regions and sometimes cultivated as an ornamental.
Abutilon theophrasti Abutilon theophrasti (Velvetleaf, China Jute, Buttonweed, Butterprint, Pie-marker, or Indian Mallow) is an annual plant in the family Malvaceae, native to southern Asia.
Acacia baileyana Acacia baileyana or Cootamundra wattle, is a shrub or tree in the genus Acacia.
Acacia cyclops Acacia cyclops, commonly known as red-eyed wattle or western coastal wattle, is a coastal shrub or small tree in the family Fabaceae.
Acacia longifolia Acacia longifolia is a species of Acacia native to southeastern Australia, from the extreme southeast of Queensland, eastern New South Wales, eastern and southern Victoria, and southeast...
Acacia mearnsii Acacia mearnsii is a fast-growing, extremely invasive leguminous tree native to Australia.
Acacia melanoxylon Acacia melanoxylon, commonly known as the Australian Blackwood, is an Acacia species native in eastern Australia.
Acacia saligna Acacia saligna, commonly known by various names including coojong, golden wreath wattle, orange wattle, blue-leafed wattle, Western Australian golden wattle, an...
Acaena novae-zelandiae Acaena novae-zelandiae (bidi-bidi, biddy-biddy, or bidgee-widgee) is an ornamental plant native to New Zealand and Australia.
Acer negundo Acer negundo is a species of maple native to North America.
Acer platanoides Acer platanoides (Norway maple) is a species of maple native to eastern and central Europe and southwest Asia, from France east to Russia, north to southern Scandinavia and southeast t...
Acer pseudoplatanus Acer pseudoplatanus, the sycamore or sycamore maple, is a species of maple native to Central Europe and Southwestern Asia, from France eastwards to Ukraine, and south in mounta...
Acetosa sagittata Acetosa sagittata, commonly known as turkey rhubarb or rambling dock or potato vine, is a herbaceous perennial plant native to southern Africa, which has become a weed in A...
Achyranthes aspera Achyranthes aspera (common name: prickly chaff flower, devil's horsewhip, Sanskrit: अपामार्ग apamarga) is a species of plant in the Amaranthaceae family.
Aegilops triuncialis Aegilops triuncialis, or barbed goatgrass, is a winter annual grass species of the Poaceae family. Barbed goatgrass grows to be about 8 to 16 inches tall with few to many stalks. The tops of the stalks contain sharp, rigid blades and barbs, which contain the seeds.
Agave sisalana Sisal, with the botanical name Agave sisalana, is a species of Agave that yields a stiff fibre used in making various products.
Ageratina adenophora Ageratina adenophora (syn. Eupatorium adenophorum) is a species of flowering plant in the daisy family known by many common names, including eupatory, sticky snakeroot, cr...
Ageratum Ageratum, (whiteweed in the USA), is a genus of 40 to 60 tropical and warm temperate flowering annuals and perennials from the family Asteraceae, tribe Eupatorieae.
Amaranthus blitoides Amaranthus blitoides, commonly called Prostrate amaranth, Matweed, or Mat amaranth, is a glabrous annual plants species.
Amaranthus spinosus Amaranthus spinosus, commonly known as the spiny amaranth, prickly amaranth or thorny amaranth.
Ambrosia trifida Ambrosia trifida is a species of flowering plant in the aster family, Asteraceae.
Ammannia coccinea Ammannia coccinea is a species of flowering plant in the loosestrife family known by several common names, including valley redstem, scarlet toothcup, and purple ammannia.
Ammophila arenaria Ammophila arenaria is a species of grass known by the common names European marram grass and European beachgrass.
Ampelodesmos Ampelodesmos is a monotypic genus of grass containing the single species Ampelodesmos mauritanicus, which is known by the common names stramma, Mauritania grass, rop...
Andropogon virginicus Andropogon virginicus is a species of grass known by several common names, including broomsedge bluestem, yellowsedge bluestem and (in Australia, because it was introduced to tha...
Angiopteris evecta Angiopteris evecta, commonly known as the Giant Fern, is a rare plant occurring in eastern and northern Australia.
Annona glabra Annona glabra is a tropical fruit tree in the family Annonaceae, in the same genus as the Soursop and Cherimoya.
Anoda cristata Anoda cristata is a species of flowering plant in the mallow family known by many common names, including spurred anoda, crested anoda, and violettas.
Anredera cordifolia Anredera cordifolia, commonly known as the Madeira vine or mignonette vine, is a South American species of ornamental succulent vine of the family Basellaceae.
Anthemis cotula Anthemis cotula, also known as stinking chamomile, is a flowering annual plant with a noticeable and strong odor.
Anthriscus sylvestris Anthriscus sylvestris, known as cow parsley, wild chervil, wild beaked parsley, keck, or Queen Anne's lace, is a herbaceous bien...
Asparagus scandens Asparagus scandens, is a plant native to South Africa in the Asparagus genus.
Asparagus setaceus Asparagus setaceus, commonly known as Common Asparagus Fern, Lace Fern, Climbing Asparagus, or Ferny Asparagus, is a vine plant in the genus Asparagus.
Asphodelus fistulosus Asphodelus fistulosus is a species of plant known as onionweed, onion-leafed asphodel, and pink asphodel.
Avena barbata Avena barbata is a species of wild oat known by the common name slender wild oat.
Avena fatua Avena fatua is a species of grass in the oat genus.
Axyris amaranthoides Axyris amaranthoides is a species of vascular plant, in the family Amaranthaceae, that has been introduced to North America.
Azadirachta indica Azadirachta indica, also known as Neem, Nimtree, and Indian Lilac is a tree in the mahogany family Meliaceae. It is one of two species in the genus Azadirachta, and is native to India, Pakistan, and Bangladesh growing in tropical and semi-tropical regions.
Azolla filiculoides Azolla filiculoides (Water Fern) is a species of Azolla, native to warm temperate and tropical regions of the Americas as well as most of the old world including Asia and Australia.
Azolla pinnata Azolla pinnata is a species of fern known by several common names, including feathered mosquitofern and water velvet.
Bassia hyssopifolia Bassia hyssopifolia is a species of flowering plant in the amaranth family, Amaranthaceae, known by the common names five-horn smotherweed, five-hook bassia, and thorn orache.
Bellardia trixago Bellardia trixago is a species of flowering plant in the broomrape family known as Mediterranean lineseed.
Beneficial weed A beneficial weed is any of various plants not generally considered domesticated, but which nonetheless has some companion plant effect, or else is edible or somehow beneficial.
Berberis thunbergii Berberis thunbergii (Japanese barberry,Thunberg's barberry, or Red barberry) is a species of Berberis, native to Japan and eastern Asia, though widely naturalized in No...
Berteroa incana Berteroa incana is a species of flowering plant in the mustard family, Brassicaceae.
Bidens frondosa Bidens frondosa is a species of flowering plant in the aster family, Asteraceae.
Bidens pilosa Bidens pilosa is a species of flowering plant in the aster family, Asteraceae.
Billardiera heterophylla Billardiera heterophylla (formerly Sollya heterophylla) is a species of flowering plant in the family Pittosporaceae, known by the common name bluebell creeper.
Bocconia frutescens Bocconia frutescens is a species of flowering plant in the poppy family known by many common names, including plume poppy, tree poppy, tree celandine, parrotweed, ...
Boerhavia coccinea Boerhavia coccinea is a species of flowering plant in the four o'clock family which is known by many common names, including scarlet spiderling, red boerhavia, hogweed, and...
Brassica elongata Brassica elongata, the elongated mustard, is a species of the mustard plant that is native to parts of Central Europe, Eastern Europe, the Balkan Peninsula, the Caucasus, Morocco and p...
Brassica tournefortii The mustard species Brassica tournefortii is known by the common names Asian mustard, African mustard, and Sahara mustard, and is well known as an invasive species, especia...
Breynia retusa Breynia retusa is a species of plant in the Phyllanthaceae family.
Bromus alopecuros Bromus alopecuros is a species of brome grass known by the common name weedy brome.
Bromus madritensis Bromus madritensis is a species of brome grass known by the common name compact brome.
Bromus secalinus Bromus secalinus is a species of bromegrass known as rye brome.
Bromus sterilis Bromus sterilis is an annual or biennial species of bromegrass known as barren brome, poverty brome, and sterile brome.
Bromus tectorum Drooping brome or cheat grass, Bromus tectorum, is a grass native to Europe, southwestern Asia and northern Africa, but has become invasive in many other areas.
Broom (plant) Brooms are a group of evergreen, semi-evergreen, and deciduous shrubs in the subfamily Faboideae of the legume family Fabaceae, mainly in the three genera Chamaecytisus, Cytisus and Genista, but also in five other small genera (see box, right).
Broom (shrub) Brooms form a tribe, Genisteae, of evergreen, semi-evergreen, and deciduous shrubs in the subfamily Faboideae of the legume family Fabaceae, mainly in the three genera Chamaecytisus, ...
Bryonia alba White Bryony (Bryonia alba) is a vigorous vine with major destructive potential to native vegetation, forest communities, vineyards, and farmland.
Bryophyllum pinnatum Kalanchoe pinnata (syn. Bryophyllum calycinum, Bryophyllum pinnatum, also known as the Air Plant, Life Plant, Miracle Leaf, Goethe Plant and the '...
Buddleja davidii Buddleja davidii (spelling variant Buddleia davidii), also called summer lilac, butterfly-bush, or orange eye, is a species of flowering plant in the family Scrophulari...
Butomus Butomus is the sole genus in the monogeneric plant family Butomaceae, containing the single species Butomus umbellatus, also known as flowering rush or grass rush.
Butomus umbellatus Butomus is the sole genus in the monogeneric plant family Butomaceae, containing the single species Butomus umbellatus, also known as flowering rush or grass rush.
Caesalpinia decapetala Caesalpinia decapetala commonly known as the Mauritius or Mysore thorn or the cat's claw is a tropical tree species originating in India.
Cakile maritima Cakile maritima, the European searocket, is a common plant in the mustard family.
Callery Pear The Callery pear is a species of pear native to China and Vietnam, in the rose family.
Callitriche stagnalis Callitriche stagnalis is a species of aquatic plant known by the common name pond water starwort.
Camelina microcarpa Camelina microcarpa is a species of flowering plant in the mustard family known by several common names, including littlepod false flax and small seed false flax.
Caragana arborescens Caragana arborescens, or Caragana or Siberian peashrub, is a species of legume.
Cardamine corymbosa Cardamine corymbosa, commonly known as the New Zealand Bittercress, is a flowering plant in the Brassicaceae, or cabbage family.
Cardamine hirsuta Hairy bittercress, Cardamine hirsuta, is an annual or biennial plant native to Europe and Asia, but also present in North America. The plant is a member of the mustard family, and is edible as a bitter herb. It flowers from quite early in the Spring until the Autumn.
Cardiospermum Cardiospermum is a genus of approximately 14 species in the soapberry family, Sapindaceae, which are native to the American, Indian, and African tropics.
Carduus acanthoides Carduus acanthoides, known as the spiny plumeless thistle, welted thistle, and plumeless thistle, is a biennial plant species of thistle in the Asteraceae—sunflower family.
Carduus crispus Carduus crispus, the Welted thistle or Curly plumeless thistle, is a biennial herb in the Asteraceae—daisy family.
Carduus nutans Carduus nutans, with the common names Musk thistle, Nodding thistle, and Nodding plumeless thistle, is a biennial herb in the Asteraceae—sunflower family.
Carduus pycnocephalus Carduus pycnocephalus, with common names including Italian thistle, Italian plumeless thistle, and Plymouth thistle, is a species of thistle.
Carduus tenuiflorus Carduus tenuiflorus, known variously as slender-flower thistle, sheep thistle, shore thistle, slender thistle,
Carpobrotus acinaciformis Carpobrotus acinaciformis (commonly known as Elands Sourfig, Elandssuurvy or Sally-my-handsome) is a succulent perennial of the family Aizoaceae, native to South Africa.
Carpobrotus chilensis Carpobrotus chilensis is a species of succulent plant known by the common name sea fig.
Cirsium arvense Cirsium arvense is a species of Cirsium, native throughout Europe and northern Asia, and widely introduced elsewhere.
Cirsium vulgare Cirsium vulgare (Spear Thistle) is a species of the genus Cirsium, native throughout most of Europe (north to 66°N, locally 68°N), western Asia (east to the Yenisei Valley), and no...
Clematis vitalba Clematis vitalba (also known as Old man's beard and Traveller's Joy) is a shrub of the Ranunculaceae family.
Cleome gynandra Cleome gynandra (Sanskrit: Ajagandha, अजगन्धा Marathi :Tilavan, तिलवन; Kenyan (Kisii): Chinsaga) is a species of cleome known by the common name Shona cabbage or African cabbage.
Clidemia hirta Clidemia hirta, commonly called soapbush or Koster's Curse, is a perennial shrub.
Colubrina asiatica Colubrina asiatica is a shrub in the family Rhamnaceae that is native to tropical and subtropical regions of the Old World, from eastern Africa to India, southeast Asia, tropical Australia, ...
Commelina benghalensis Commelina benghalensis, commonly known as the Benghal dayflower, tropical spiderwort, or wandering Jew, is a perennial herb native to tropical Asia and Africa.
Compact brome Bromus madritensis (also, B. matritensis) is a species of brome grass known by the common name compact brome.
Conicosia pugioniformis Conicosia pugioniformis is a species of succulent plant in the ice plant family known by the common names narrow-leaved iceplant and pigroot.
Convolvulus arvensis Convolvulus arvensis (field bindweed) is a species of bindweed in the morning glory family (Convolvulaceae), native to Europe and Asia.
Egeria densa Egeria densa (syn. Anacharis densa (Planch.) Vict., Elodea densa (Planch.) Casp.; Large-flowered Waterweed or Brazilian Waterweed) is a species of Egeria native to wa...
Ehrharta calycina Ehrharta calycina is a species of grass known by the common names perennial veldtgrass and purple veldtgrass.
Ehrharta erecta Ehrharta erecta is a species of grass also known as panic veldtgrass.
Eichhornia crassipes Eichhornia crassipes, commonly known as (common) water hyacinth, is an aquatic plant native to the Amazon basin, and is often considered a highly problematic invasive species outside i...
Elaeagnus angustifolia Elaeagnus angustifolia, commonly called silver berry, oleaster, Russian olive, or wild olive, is a species of Elaeagnus, native to western and central Asia, from ...
Elaeagnus pungens Elaeagnus pungens is a species of flowering plant in the family Elaeagnaceae, known by the common names thorny olive and silverthorn; also by the family name "oleaster".
Elaeagnus umbellata Elaeagnus umbellata, is known as Japanese silverberry, umbellata oleaster, autumn olive, autumn elaeagnus, or sprea...
Eleusine indica Eleusine indica (Indian goosegrass, wiregrass, crowfootgrass) is a species of grass in the family Poaceae.
Emex australis Emex australis, commonly known as doublegee or three-cornered jack, is a herbaceous plant of the Polygonaceae.
Emilia sonchifolia Emilia sonchifolia, also known as lilac tasselflower or cupid's shaving brush is flowering plant in the genus Emilia and from the family Asteraceae.
Equisetum Equisetum (horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds.
Equisetum arvense Equisetum arvense, the field horsetail or common horsetail, is a herbaceous perennial plant, native throughout the arctic and temperate regions of the northern hemisphere.
Equisetum hyemale Equisetum hyemale (rough horsetail or scouring rush), known in South Africa as snake grass, is a species of horsetail native to moist forests, forest edges and stream banks...
Erechtites glomerata Erechtites glomerata is a species of flowering plant in the daisy family known by the common names Australian fireweed and cutleaf burnweed.
Erechtites minima Erechtites minima is a species of flowering plant in the aster family known by the common names coastal burnweed and Australian fireweed.
Erica lusitanica Erica lusitanica is a species of flowering plant in the family Ericaceae, known by the common names Spanish and Portuguese heath.
Erigeron strigosus Erigeron strigosus is a species of flowering plant in the daisy family known by the common name plains fleabane.
Erodium cicutarium Erodium cicutarium, also known as redstem filaree, common stork's-bill or pinweed, is a herbaceous annual – or in warm climates, biennial – member of the family Geraniaceae...
Erysimum cheiranthoides Erysimum cheiranthoides (Treacle-mustard) is a species of Erysimum native to most of central and northern Europe and northern and central Asia.
Eugenia uniflora The Pitanga, Surinam Cherry, Brazilian Cherry, or Cayenne Cherry (Eugenia uniflora) is a plant in the family Myrtaceae, native to tropical South America's east coast rangin...
Euonymus fortunei Euonymus fortunei, also commonly known as winter creeper or wintercreeper and Fortune's spindle, is a species of flowering plant in the family Celastraceae, native to east Asia, including Ch...
Euphorbia esula Euphorbia esula, commonly known as green spurge or leafy spurge, is a species of spurge native to central and southern Europe (north to England, the Netherlands, and Germany), an...
Fallopia baldschuanica Fallopia baldschuanica (syn. Fallopia aubertii, Polygonum baldschuanicum) is a species of flowering plant in the knotweed family known by several common names, including Russian v...
Fallopia convolvulus Fallopia convolvulus (black-bindweed or wild buckwheat) is a fast-growing annual flowering plant in the family Polygonaceae native throughout Europe, Asia and northern Africa.
Fallopia japonica Japanese knotweed is a large, herbaceous perennial plant, native to eastern Asia in Japan, China and Korea.
Fallopia × conollyana Haringey Knotweed (Fallopia × conollyana) is a hybrid between the Russian vine and the Japanese knotweed.
Festuca arundinacea Festuca arundinacea (syn., Lolium arundinaceum Darbyshire; Schedonorus phoenix (Scop.) Holub) is a species of grass commonly known as tall fescue.
Ficus microcarpa Ficus microcarpa, also known as Chinese Banyan, Malayan Banyan, Taiwan Banyan, Indian Laurel, Curtain fig, or Gajumaru, is a banyan native in the range fr...
Filago vulgaris Filago vulgaris or Filago germanica, commonly known as common cudweed or common cottonrose, is an annual herbaceous plant of the genus Filago.
Fimbristylis miliacea Fimbristylis miliacea, the grasslike fimbry, is a species of fimbry that probably originated in coastal tropical Asia but has since spread to most continents as an introduced species.
Flaveria trinervia Flaveria trinervia is a species of flowering plant in the aster family known by the common name clustered yellowtops.
Foxtail brome Bromus madritensis (also, B. matritensis) is a species of brome grass known by the common name compact brome.
Foxtail chess Bromus madritensis (also, B. matritensis) is a species of brome grass known by the common name compact brome.
Furcraea foetida Furcraea foetida (Giant Cabuya, Green-aloe or Mauritius-hemp) is a species in the family Agavaceae native to the Caribbean and northern South America.
Galega officinalis Galega officinalis, commonly known as goat's rue, French lilac, Italian fitch or professor-weed, is an herbaceous plant in the Faboideae subfamily.
Genista canariensis Genista canariensis is a species of broom known by the common name Canary broom, or Canary Islands broom.
Genista germanica Genista germanica is a plant species in the genus Genista which grows in Central and Western Europe.
Genista linifolia Genista linifolia is a species of broom known by the common names flax broom and Mediterranean broom.
Genista monspessulana Genista monspessulana (syn. Cytisus monspessulanus or Teline monspessulana) also known as French broom, Cape broom and Montpellier broom, is a woody perennial shrub...
Giant Hogweed Giant Hogweed is a plant in the family Apiaceae, native to the Caucasus Region and Central Asia.
Gladiolus italicus Gladiolus italicus is a species of gladiolus known by the common names Italian gladiolus, field gladiolus, and common sword-lily.
Global Invasive Species Information Network The Global Invasive Species Information Network is a web-based network of data providers including government, non-government, non-profit, educational, and other organizations that agree to work...
Gloriosa superba Gloriosa superba is a species of flowering plant in the family Colchicaceae.
Gorse Gorse, furze, furse or whin are members of the genus Ulex.
Grevillea robusta Grevillea robusta, commonly known as the southern silky oak or silky oak, or Australian silver oak, is the largest species in the genus Grevillea of the family Proteaceae.
Guava Guavas (singular guava,) are plants in the Myrtle family (Myrtaceae) genus Psidium, which contains about 100 species of tropical shrubs and small trees.
Gunnera Gunnera is a genus of herbaceous flowering plants, some of them gigantic.
Gunnera tinctoria Gunnera tinctoria, the Chilean rhubarb, is a plant species native to southern Chile and neighbour zones in Argentina.
Halimodendron Halimodendron is a monotypic genus of legume containing the single species Halimodendron halodendron, which is known by several common names, including common salt tree and '...
Halogeton glomeratus Halogeton glomeratus is a species of flowering plant in the amaranth family known by the common names saltlover, Aral barilla, and halogeton.
Hedera canariensis Hedera canariensis is a species of Ivy (genus Hedera) which is native to the Atlantic coast in Canary islands and northern Africa.
Hedera helix Hedera helix (common ivy, English ivy, European ivy, or just ivy) is a species of flowering plant in the family Araliaceae, native to most of Europe and western Asia.
Hedera hibernica Hedera hibernica (common name Atlantic ivy or Irish ivy) is a woody vine native to the Atlantic coast of Europe.
Hedychium Hedychium is a genus of flowering plants in the ginger family Zingiberaceae, native to lightly wooded habitats in Asia.
Hedychium gardnerianum Hedychium gardnerianum (Kahili Ginger, Ginger Lily (Aust.)) is a plant native to the Himalayas in India, Nepal, and Bhutan.
Hedypnois cretica Hedypnois cretica is a species of flowering plant in the daisy family known as Crete weed and Cretanweed.
Helianthus ciliaris Helianthus ciliaris is a species of sunflower known by the common names Texas blueweed and yerba parda.
Heliotropium amplexicaule Heliotropium amplexicaule is a species of heliotrope known by several common names, including clasping heliotrope, blue heliotrope, and summer heliotrope.
Heracleum mantegazzianum Giant Hogweed (Heracleum mantegazzianum, also giant cow parsley) is a plant in the family Apiaceae, native to the Caucasus Region and Central Asia.
Heracleum sosnowskyi Heracleum sosnowskyi or Sosnowsky's Hogweed, is a flowering plant in the family Apiaceae, originally native to Caucasus.
Heteranthera limosa The aquatic plant Heteranthera limosa is a member of the water hyacinth family known by the common names ducksalad and blue mudplantain.
Hibiscus rosa-sinensis Hibiscus rosa-sinensis, known colloquially as rose mallow, Chinese hibiscus, China rose and shoe flower, is a species of flowering plant in the family Malvaceae, nati...
Hieracium pilosella Mouse-ear Hawkweed is a yellow-flowered species of Asteraceae, native to Europe and northern Asia.
Himalayan Balsam Impatiens glandulifera is a large annual plant native to the Himalayas.
Hiptage benghalensis Hiptage benghalensis, often simply called Hiptage, is a perennial, evergreen liana native to India, Southeast Asia and the Philippines.
Hirschfeldia incana Hirschfeldia incana (formerly Brassica geniculata) is a species of flowering plant in the mustard family known by many common names, including shortpod mustard, buchanweed, a...
Holcus lanatus Yorkshire Fog or Velvet Grass, Holcus lanatus, is a perennial grass in the Poaceae Family.
Hordeum jubatum Hordeum jubatum (foxtail barley) is a perennial plant species in the grass family Poaceae.
Ipomoea cairica Ipomoea cairica morning glory has many common names, including Mile-a-minute Vine, Messina Creeper, Cairo Morning Glory, Coast Morning Glory and Railroad Creeper. This vining perennial has palmate leaves and large, showy white to lavender flowers.
Ipomoea indica Ipomoea indica is a species of flowering plant in the family Convolvulaceae, known by several common names, including blue morning glory, oceanblue morning glory, koali awa, and blue daw...
Ipomoea quamoclit Ipomoea quamoclit (cypress vine, cypressvine morning glory, cardinal creeper, cardinal vine, star glory or hummingbird vine) is a species of Ipomoea m...
Ipomoea triloba Ipomoea triloba is a species of Ipomoea morning glory known by several common names, including littlebell and Aiea morning glory.
Iris missouriensis Iris missouriensis (syn. I. montana) is a hardy flowering bulbous species of the genus iris, in the family Iridaceae.
Iris pseudacorus Iris pseudacorus (yellow flag, yellow iris, water flag) is a species in the genus Iris, of the family Iridaceae.
Ivy Ivy, plural ivies (Hedera), is a genus of 12–15 species of evergreen climbing or ground-creeping woody plants in the family Araliaceae, native to western, central and southern Europe, Macaronesia, northwestern Africa and across central-southern Asia east to Japan and Taiwan.
Limnobium laevigatum Limnobium laevigatum is a floating aquatic plant, and is a member of the family Hydrocharitaceae.
Livistona chinensis Livistona chinensis, the Chinese fan palm or fountain palm, is a species of subtropical palm tree in eastern Asia.
Logfia gallica Logfia gallica, (syn: Filago gallica), is a species of herbaceous plant.
Lolium multiflorum Lolium multiflorum (Italian ryegrass, annual ryegrass) is a ryegrass native to temperate Europe, though its precise native range is unknown.
Lonicera japonica The Japanese honeysuckle (Lonicera japonica; Suikazura スイカズラ／吸い葛 in Japanese; Jinyinhua in Chinese; 忍冬 in Chinese and Japanese) is a species of honeysuckle native to eastern Asia...
Lonicera maackii Lonicera maackii is a species of honeysuckle in the family Caprifoliaceae, native to temperate Asia in northern and western China, Mongolia, Japan, Korea, and southeastern Russia.
Lonicera tatarica Lonicera tatarica is a species of honeysuckle known by the common name Tatarian honeysuckle.
Lotus corniculatus Lotus corniculatus is a common flowering plant native to grassland temperate Eurasia and North Africa.
Ludwigia peploides Ludwigia peploides is a species of flowering plant in the evening primrose family known by the common names floating primrose-willow and creeping water primrose.
Ludwigia repens Ludwigia repens is a species of flowering plant in the evening primrose family known by the common name creeping primrose willow.
Lupinus arboreus Lupinus arboreus, yellow bush lupine (USA) or tree lupin (UK), is a species of flowering plant in the legume family Fabaceae, native to California, where it is widely distributed...
Lupinus polyphyllus Lupinus polyphyllus (Large-leaved Lupine, Big-leaved Lupine, or, primarily in cultivation, Garden Lupin) is a species of lupine (lupin) native to western North America from...
Lygodium microphyllum Lygodium microphyllum (commonly known as, variously, climbing maidenhair fern, Old World climbing fern, small-leaf climbing fern, or snake fern) is a climbing fern origi...
Lysimachia nummularia Lysimachia nummularia (syn. Lysimachia zawadzkii Wiesner) is a species of flowering plant in the family Myrsinaceae.
Lythrum hyssopifolia Lythrum hyssopifolia (orth. var. L. hyssopifolium) is a species of flowering plant in the loosestrife family known by the common names hyssop loosestrife and grass-poly.
Lythrum salicaria Lythrum salicaria (Purple loosestrife) is a flowering plant belonging to the family Lythraceae, native to Europe, Asia, northwest Africa, and southeastern Australia.
Malvella leprosa Malvella leprosa is a species of flowering plant in the mallow family known by the common names alkali mallow and alkali sida.
Mecardonia procumbens Mecardonia procumbens is an annual or perennial herb native to tropical and subtropical regions of the Americas.
Megathyrsus maximus Megathyrsus maximus, known as Guinea grass and green panic grass in English, is a large perennial bunch grass that is native to Africa, Palestine, and Yemen.
Melaleuca quinquenervia Melaleuca quinquenervia, commonly known as broad-leaved paperbark, the paper bark tea tree or niaouli, is a small- to medium-sized tree of the allspice family, Myrtaceae.
Melia azedarach Melia azedarach, commonly known by many names, including white cedar, chinaberry tree, bead-tree, Cape lilac, syringa berrytree,...
Melilotus indicus Melilotus indicus, sometimes incorrectly written Melilotus indica, is a yellow-flowered herb native to northern Africa, Europe and Asia, but naturalized throughout the rest of the world.
Melinis minutiflora Melinis minutiflora, commonly known as molasses grass, is a species of grass.
Melinis repens Melinis repens is a species of grass known by the common names rose Natal grass, or simply Natal grass, and Natal redtop.
Melochia umbellata Melochia umbellata is a species of flowering plant in the mallow family, Malvaceae.
Mentha spicata Mentha spicata (spearmint or spear mint) is a species of mint native to much of Europe and southwest Asia, though its exact natural range is uncertain due to extensive early cult...
Merremia peltata Merremia peltata is a vine and climber that is an invasive species on some Pacific islands.
Merremia tuberosa Merremia tuberosa, also known as Hawaiian wood rose, Spanish arborvine, Spanish woodbine, or yellow morning-glory, is a vine native to Mexico.
Mesembryanthemum nodiflorum Mesembryanthemum nodiflorum is a species of succulent plant in the ice plant family known by the common name slenderleaf ice plant.
Metrosideros excelsa Metrosideros excelsa (pōhutukawa, New Zealand pohutukawa, New Zealand Christmas tree) is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of ...
Miconia calvescens Miconia calvescens, the velvet tree, miconia, or bush currant, is a species of flowering plant in the family Melastomataceae.
Microstegium vimineum Microstegium vimineum, commonly known as Japanese stiltgrass or Nepalese browntop, is an annual grass that is common in a wide variety of habitats and is well adapted to low ligh...
Mikania micrantha Mikania micrantha is a tropical plant in the Asteraceae; known as Bitter Vine or Climbing Hemp Vine or American Rope.
Mikania scandens Mikania scandens (commonly known as the climbing hempweed) is a herbaceous vine.
Mimosa Mimosa is a genus of about 400 species of herbs and shrubs, in the subfamily Mimosoideae of the legume family Fabaceae.
Mimosa pigra Mimosa pigra, is an invasive species of the genus Mimosa, in the family Fabaceae.
Mimosa pudica Mimosa pudica (from pudica "shy, bashful or shrinking"; also called sensitive plant, sleepy plant and the touch-me-not), is a creeping annual or perennial herb often grown for it...
Mirabilis nyctaginea Mirabilis nyctaginea is a species of flowering plant in the four o'clock family known by several common names, including wild four o'clock, heartleaf four o'clock, and heartle...
Monochoria korsakowii Monochoria korsakowii is a species of flowering plant in the water hyacinth family known by several common names, including heartleaf false pickerelweed and oval-leafed pondweed.
Monochoria vaginalis Monochoria vaginalis is a species of flowering plant in the water hyacinth family known by several common names, including heartleaf false pickerelweed and oval-leafed pondweed.
Monotypic taxon In biology, a monotypic taxon is a taxonomic group which contains only one immediately subordinate taxon.
Noxious weed A noxious weed is a plant species that has been designated by country, state, provincial, or national agricultural authority as one that is injurious to agricultural and/or horticultural crops, natural habitats and/or ecosystems, and/or humans or livestock.
Nymphaea mexicana Nymphaea mexicana is a species of aquatic plant that is native to the Southern United States and Mexico as far south as Michoacán.
Nymphaea odorata Nymphaea odorata, also known as the Fragrant Water Lily and Beaver Root, is an aquatic plant belonging to the genus Nymphaea.
Opuntia Opuntia, also known as nopales or paddle cactus (see below), is a genus in the cactus family, Cactaceae.
Opuntia aurantiaca Opuntia aurantiaca, commonly known as Tiger Pear, Jointed Cactus or Jointed Prickly-pear, is a species of cactus from South America.
Opuntia stricta Opuntia stricta is a species of cactus from southern North America, Central America, the Caribbean, and northern South America.
Orobanche ramosa Orobanche ramosa is a species of broomrape known by the common names hemp broomrape and branching broomrape.
Oxalis barrelieri Oxalis barrelieri, the Lavender Sorrel, also commonly called in French trèfle, oseille-marron, or oseille-savane, is a plant from the genus Oxalis.
Oxalis latifolia Oxalis latifolia is a species of flowering plant in the woodsorrel family known by the common names garden pink-sorrel and broadleaf woodsorrel.
Oxalis pes-caprae Oxalis pes-caprae (Bermuda buttercup, African wood-sorrel, Bermuda sorrel, Buttercup oxalis, Cape sorrel, English weed, Goat's-foot, Sourgrass, Soursob and Soursop; (Afrikaans: Suring)) is a species of tristylous...
Paddy melon The paddy melon is a prostrate or climbing annual herb native to tropical and southern Africa.
Pampas Grass Cortaderia selloana, commonly known as Pampas Grass, is a tall grass native to southern South America, including the pampas after which it is named, and Patagonia.
Panicum repens Panicum repens is a species of grass known by many common names, including torpedograss, creeping panic, panic rampant, couch panicum, wainaku grass, quack g...
Paulownia tomentosa Paulownia tomentosa (also known as the Empress Tree, Princess Tree or Foxglove Tree) is a deciduous tree in the genus Paulownia, native to central and western China, bu...
Peltandra virginica Peltandra virginica is a plant of the Araceae family known by the common names green arrow arum and tuckahoe.
Pennisetum clandestinum The tropical grass species Pennisetum clandestinum is known by several common names, most often kikuyu grass, as it is native to the region of East Africa that is home to the Kĩkũyũ tribe.
Pennisetum setaceum Pennisetum setaceum, commonly known as Fountain Grass, is a C4 perennial bunch grass that is native to open, scrubby habitats in East Africa, tropical Africa, Middle East and SW Asia.
Persicaria amphibia Persicaria amphibia (syn. Polygonum amphibium) is a species of flowering plant in the knotweed family known by several common names, including longroot smartweed, water knotweed...
Persicaria perfoliata Persicaria perfoliata (syn. Polygonum perfoliatum) is a species of flowering plant in the buckwheat family, Polygonaceae.
Phalaris aquatica Phalaris aquatica (syn. P. tuberosa) known by the common names bulbous canarygrass and Harding grass, is a species of grass in the genus Phalaris of the Poaceae Family.
Phalaris arundinacea Phalaris arundinacea, sometimes known as reed canarygrass, is a tall, perennial bunchgrass that commonly forms extensive single-species stands along the margins of lakes and streams an...
Phormium tenax Phormium tenax, (called flax in New Zealand English; harakeke in Māori; New Zealand flax outside New Zealand; and New Zealand hemp in historical nautical contexts) is...
Phragmites Phragmites, the common reed, is a large perennial grass found in wetlands throughout temperate and tropical regions of the world.
Pilosella aurantiaca Pilosella aurantiaca (Fox-and-cubs, Orange Hawkweed Tawny Hawkweed, Devil's Paintbrush, Grim-the-collier) is a flowering plant of the family Asteraceae native to a...
Piper aduncum Matico (Piper aduncum) is a flowering plant in the family Piperaceae.
Pistia Pistia is a genus of aquatic plant in the arum family, Araceae.
Pittosporum undulatum Pittosporum undulatum is a tree growing to 15m tall with wavy (undulating) leaf edges.
Platycerium bifurcatum Platycerium bifurcatum (elkhorn fern or staghorn fern) is a species of fern native to Java, New Guinea and southeastern Australia, in New South Wales, Queensland and on Lord Howe...
Pluchea indica Pluchea indica is a species of flowering plant in the aster family, Asteraceae.
Poa annua Poa annua, or annual meadow grass (known in America more commonly as annual bluegrass or simply poa), is a widespread low-growing turfgrass in temperate climates.
Poa bulbosa Poa bulbosa is a species of grass known by the common names bulbous bluegrass or bulbous meadow-grass.
Poa compressa Poa compressa (Canada bluegrass or flattened meadowgrass) is a perennial flattened meadow grass, similar to Common Meadow-grass, Poa pratensis.
Polygonum arenastrum Polygonum arenastrum (Common knotweed) is a summer annual weed that is native to Europe and can be found on most continents as an introduced species and a common noxious weed.
Potamogeton crispus Potamogeton crispus, the curly-leaf pondweed, is a species of aquatic plant native to Eurasia but perhaps better known as an introduced species and often a noxious weed in North America.
Prosopis strombulifera Prosopis strombulifera is a species of mesquite or algarrobo, a shrub in the legume family.
Prosopis velutina Prosopis velutina, commonly known as velvet mesquite, is a small to medium sized perennial tree.
Prunus campanulata Prunus campanulata is a species of cherry native to Taiwan, widely grown as an ornamental tree, and a symbol of Nago, Okinawa in the Ryukyu Islands of Japan. It is variously known in English as the Taiwan cherry, Formosan cherry, or bellflower cherry.
Psidium cattleianum Psidium cattleianum, named in honour of notable English horticulturist Sir William Cattley, commonly known as Cattley guava or Peruvian guava, is a small tree, bearing small red ...
Psidium guajava The apple guava or common guava (Psidium guajava; known as goiaba in Portuguese and guayaba in Spanish) is an evergreen shrub or small tree native to Mexico, the Caribbean, an...
Psidium littorale Cattley guava, as named in honour of notable English horticulturist Sir William Cattley, or Peruvian guava (P. cattleianum is the most common used name and supported by taxonomy websit...
Pteridium aquilinum Pteridium aquilinum (bracken, brake or common bracken), also known as "eagle fern," is a species of fern occurring in temperate and subtropical regions in both hemispheres.
Pteridium esculentum Pteridium esculentum, commonly known as Austral bracken or simply bracken, is a species of the bracken genus native to a number of countries in the Southern Hemisphere.
Pteris vittata Pteris vittata, commonly known variously as the Chinese brake, Chinese ladder brake, or simply ladder brake, is a fern speci...
Pyracantha angustifolia Pyracantha angustifolia is a species of shrub in the rose family known by the common name narrowleaf firethorn.
Pyrus calleryana The Callery Pear (Pyrus calleryana) is a species of pear native to China.
Pōhutukawa The Pōhutukawa (Metrosideros excelsa) is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of red flowers made up of a mass of stamens.
Ranunculus acris Ranunculus acris is a species of flowering plant in the family Ranunculaceae, and is one of the more common buttercups across Europe and temperate Eurasia.
Ranunculus repens Ranunculus repens (creeping buttercup) is a flowering plant in the buttercup family, native to Europe, Asia and northwestern Africa.
Raphanus raphanistrum Raphanus raphanistrum, wild radish or jointed charlock, is a flowering plant in the family Brassicaceae.
Reed canary grass Reed canary grass, Phalaris arundinacea, is a tall, perennial bunchgrass that commonly forms extensive single-species stands along the margins of lakes and streams and in wet open area...
Reseda lutea Reseda lutea or wild mignonette is a species of fragrant herbaceous plant.
Rhamnus frangula Rhamnus frangula, (Frangula alnus), the alder buckthorn, is a tall deciduous shrub in the family Rhamnaceae.
Rhodomyrtus tomentosa Rhodomyrtus tomentosa also known as Rose Myrtle is a flowering plant in the family Myrtaceae, native to southern and southeastern Asia, from India, east to southern China, Hong Kon...
Rhytidiadelphus squarrosus Rhytidiadelphus squarrosus is a species of moss known as springy turf-moss in the United Kingdom, and square goose neck moss in the United States.
Ricinus communis The castor oil plant (Ricinus communis) is a species of flowering plant in the spurge family, Euphorbiaceae.
Rorippa austriaca Rorippa austriaca is a species of flowering plant in the mustard family known by the common names Austrian fieldcress and Austrian yellowcress.
Rotala indica Rotala indica is a species of flowering plant in the loosestrife family known by the common name Indian toothcup.
Rubus armeniacus Rubus armeniacus, Armenian Blackberry or Himalayan Blackberry, is a species of Rubus in the blackberry group Rubus subgenus Rubus series Discolores (P.J. Müll.) ...
Rubus ellipticus Rubus ellipticus commonly known as Yellow Himalayan raspberry is a thorny fruiting shrub that originates from South Asia.
Rubus niveus Rubus niveus (Mysore raspberry, Ceylon raspberry, hill raspberry; 红泡刺藤, hong pao ci teng, काला हिसालू, kala hinsalu) is a species o...
Rubus rosifolius Rubus rosifolius, (syn. Rubus rosaefolius) also known as roseleaf bramble, West Indian raspberry, thimbleberry and ola'a is a prickly subshrub native to rainfores...
Rubus ulmifolius Rubus ulmifolius is a species of wild blackberry known by the English common name elmleaf blackberry or thornless blackberry and the Spanish common name zarzamora.
Ruellia simplex Ruellia simplex (Britton's wild petunia, Mexican petunia, Mexican bluebell) is a species of flowering plant in the acanthus family, Acanthaceae.
Rumex acetosella Rumex acetosella is a species of sorrel, bearing the common names sheep's sorrel, red sorrel, sour weed, and field sorrel.
Rumex crispus Rumex crispus ("curly dock" or "yellow dock") is a perennial flowering plant in the family Polygonaceae, native to Europe and Western Asia.
Russian knapweed Russian knapweed (Acroptilon repens) is a bushy rhizomatous perennial, up to 8 dm tall.
Saccharum ravennae Saccharum ravennae, with the common name Ravennagrass, elephant grass and locally known as ekra, ikora(ইকঁৰা) in Assamese is a species of grass in genus the Saccharum...
Salix atrocinerea Salix atrocinerea, commonly called grey willow, is a species of willow.
Salix cinerea Salix cinerea (grey willow; also occasionally grey sallow) is a species of willow native to Europe and western Asia.
Salix fragilis Salix fragilis, with the common names crack willow or brittle willow, is a species of willow native to Europe and Western Asia.
Salsola Salsola is a genus of herbs, subshrubs, shrubs, and small trees in the family Chenopodiaceae, native to Africa, Asia, and Europe.
Salvia aethiopis Salvia aethiopis is a species of perennial plant known by the common name Mediterranean sage.
Salvia virgata Salvia pratensis (Meadow Clary or Meadow Sage) is a herbaceous perennial in the family Lamiaceae, native to Europe, western Asia and northern Africa.
Salvinia molesta Salvinia molesta, commonly known as giant salvinia or kariba weed after it infested a large portion of the reservoir of the same name, is an aquatic fern, native to south-eastern...
Sapium sebifera Sapium sebiferum, formerly referred to as Triadica sebifera, is commonly known as the Chinese tallow tree, Florida aspen, Chicken Tree, and Gray Popcorn Tree.
Schinus molle Peruvian pepper (Schinus molle, also known as American pepper, Peruvian peppertree, escobilla, false pepper, molle del Peru, pepper tree, pepperc...
Schinus terebinthifolius Schinus terebinthifolius is a species of flowering plant in the cashew family, Anacardiaceae, that is native to subtropical and tropical South America (southeastern Brazil, northern Argentin...
Schoenoplectus mucronatus Schoenoplectus mucronatus (syn. Scirpus mucronatus) is a species of flowering plant in the sedge family known by the common names bog bulrush, roughseed bulrush, and ricef...
Securigera varia Securigera varia, commonly known as Crown Vetch or Purple Crown Vetch, is a low-growing legume vine.
Selaginella kraussiana Selaginella kraussiana, sometimes known by the common names of Krauss's spikemoss and African clubmoss, is a clubmoss found naturally in the Canary Islands, the Azores and parts ...
Selaginella plana Selaginella plana, commonly known as the Asian Spikemoss, is a lycophyte native to Tropical Asia particularly in India, Indochina, and Indonesia.
Senna multiglandulosa Senna multiglandulosa is a species of flowering plant in the legume family known by several common names, including glandular senna, downy senna, and buttercup bush.
Senna obtusifolia Senna obtusifolia (Chinese Senna or sicklepod) is a legume in the genus Senna, sometimes separated in the monotypic genus Diallobus.
Sesbania bispinosa The legume Sesbania bispinosa, also known as Sesbania aculeata (Willd.) Pers., is a small tree in the genus Sesbania.
Setaria faberi Setaria faberi, the Giant Foxtail, also known as Chinese foxtail, Chinese millet, giant bristlegrass, or nodding foxtail, is an Asian grass.
Setaria pumila Setaria pumila is a species of grass known by many common names, including yellow foxtail, yellow bristle grass, pigeon grass, and cattail grass.
Setaria verticillata Setaria verticillata is a species of grass known by the common names Bristly foxtail and hooked bristlegrass.
Setaria viridis Setaria viridis is a species of grass known by many common names, including green foxtail and green bristlegrass.
Sida cordifolia Sida cordifolia (bala, country mallow, heart-leaf sida or flannel weed) is a perennial subshrub of the mallow family Malvaceae native to India.
Silene noctiflora Silene noctiflora is a species of flowering plant in the pink family known by the common names night-flowering catchfly or clammy cockle.
Sisal Sisal, with the botanical name Agave sisalana, is a species of Agave that yields a stiff fibre used in making various products.
Solanum carolinense Solanum carolinense, Carolina horsenettle is not a true nettle, but a member of the Solanaceae, or nightshade family.
Solanum dimidiatum Solanum dimidiatum is a species of nightshade known by the common names Torrey's nightshade, western horsenettle, and robust horsenettle.
Solanum linnaeanum Solanum linnaeanum is a nightshade species known as Devil's Apple and in some places where it is introduced as "Apple of Sodom".
Solanum mauritianum Solanum mauritianum is a small tree or shrub native to South America, including Northern Argentina, Southern Brazil, Paraguay and Uruguay.
Solanum nigrum Solanum nigrum (European black nightshade or locally just "black nightshade", duscle, garden nightshade, hound's berry, petty morel, wonder berry, '...
Solanum torvum Solanum torvum (Turkey Berry), is a bushy, erect and spiny perennial plant used horticulturally as a rootstock for eggplant.
Solanum viarum Solanum viarum, the tropical soda apple, is a perennial shrub native to Brazil and Argentina with a prickly stem and prickly leaves.
Solidago canadensis Solidago canadensis (Canada golden-rod, Canada goldenrod) is an herbaceous perennial plant of the family Asteraceae native to northeastern North America but established as an in...
Soliva sessilis Soliva sessilis, one of up to nine species of the genus Soliva, is a low-growing herbaceous annual plant.
Sonchus asper Sonchus asper (sharp-fringed sow thistle, prickly sow thistle, spiny sow thistle, or spiny-leaved sow thistle) is an annual plant with spiny leaves and yellow flowers...
Sonchus oleraceus Sonchus oleraceus is native to Asia, Australia, and Europe. The Latin name Sonchus refers to the hollow stem, while oleraceus refers to its good taste. The common name sow thistle refers to its attractiveness to swine, and the similarity of the leaf to younger thistle plants.
Sonchus tenerrimus Sonchus tenerrimus is a species of flowering plant in the aster family known by the common name slender sow thistle.
Spartina Spartina, commonly known as cordgrass or cord-grass, is a genus of 14 species of grasses in the family Poaceae.
Spartina alterniflora Spartina alterniflora (Smooth Cordgrass or Saltmarsh Cordgrass) is a perennial deciduous grass which is found in intertidal wetlands, especially estuarine salt marshes.
Spartina anglica Spartina anglica is a species of cordgrass that originated in southern England in about 1870.
Spartina densiflora Spartina densiflora is a species of grass known by the common name dense-flowered cordgrass.
Spartina foliosa Spartina foliosa is a species of grass known by the common name California cordgrass.
Spartina patens Spartina patens (saltmeadow cordgrass), also known as salt marsh hay, is a species of cordgrass native to the Atlantic coast of the Americas, from Newfoundland south along the eastern United...
Spartium Spartium junceum (syn. Genista juncea), known as Spanish broom or weaver's broom, is a species of flowering plant in the family Fabaceae, native to the Mediterranean in south...
Spathodea Spathodea is a monotypic genus in the flowering plant family Bignoniaceae.
Spearmint Mentha spicata (Spear Mint or Spearmint) is a species of mint native to much of Europe and southwest Asia, though its exact natural range is uncertain due to extensive early cult...
Sphaerophysa salsula Sphaerophysa salsula is a species of flowering plant in the legume family known by the common names alkali swainsonpea, Austrian peaweed, and red bladder-vetch.
Sphagneticola trilobata Sphagneticola trilobata, commonly known as the Singapore Daisy, Creeping-oxeye, Trailing Daisy, and Wedelia.
Spiraea japonica Spiraea japonica (Japanese spiraea) is a plant in the family Rosaceae.
Sporobolus vaginiflorus Sporobolus vaginiflorus is a species of grass known by the common names poverty grass, poverty dropseed, and sheathed dropseed.
Stachys floridana Stachys floridana is a species of flowering plant in the mint family, Lamiaceae.
Stachys palustris Stachys palustris, commonly known as marsh woundwort, marsh hedge-nettle, or hedge-nettle, is an edible perennial grassland herb growing to 80 centimeters tall.
Stachytarpheta cayennensis Stachytarpheta cayennensis is a species of flowering plant in the verbena family known by many English language common names, including blue snakeweed, Cayenne snakeweed, dark...
Stenocarpus sinuatus Stenocarpus sinuatus, known as the Firewheel Tree is an Australian rainforest tree in the Protea family.
Striga (plant) Striga, commonly known as witchweed or witches weed, is a genus of 28 species of parasitic plants that occur naturally in parts of Africa, Asia, and Australia.
Striga asiatica Asiatic witchweed is a hemiparasitic plant in the Scrophulariaceae family.
Stylosanthes Stylosanthes is a genus of flowering plants in the legume family, Fabaceae and contains numerous highly important pasture and forage species.
Syzygium jambos Syzygium jambos is a tree originating in Southeast Asia and occurring widely elsewhere, having been introduced as an ornamental and fruit tree.
Talinum paniculatum Talinum paniculatum is a succulent subshrub in the purslane family, Portulacaceae, that is native to much of the western hemisphere.
Tamarix The genus Tamarix (tamarisk, salt cedar) is composed of about 50–60 species of flowering plants in the family Tamaricaceae, native to drier areas of Eurasia and Africa.
Tamarix chinensis Tamarix chinensis is a species of tamarisk known by the common names Chinese tamarisk and five-stamen tamarisk or saltcedar.
Tamarix gallica Tamarix gallica, the French Tamarisk, is a deciduous, herbaceous, twiggy shrub or small tree reaching up to about 5 meters high.
Tamarix parviflora Tamarix parviflora (syn. T. tetrandra) is a species of tamarisk known by the common name smallflower tamarisk.
Tamarix ramosissima Tamarix ramosissima, commonly known as Saltcedar or Salt Cedar, is a deciduous arching shrub with reddish stems, feathery, pale green foliage, and characteristic small pink flowers.
Tansy Tansy (Tanacetum vulgare) is a perennial, herbaceous flowering plant of the aster family, native to temperate Europe and Asia.
Taraxacum Taraxacum is a large genus of flowering plants in the family Asteraceae.
Taraxacum officinale Taraxacum officinale, the common dandelion (often simply called "dandelion"), is a flowering herbaceous perennial plant of the family Asteraceae (Compositae).
Tecoma stans Tecoma stans is a species of flowering perennial shrub in the trumpet vine family, Bignoniaceae, that is native to the Americas.
Tetragonia Tetragonia is a genus of 50-60 species of flowering plants in the family Aizoaceae, native to temperate and subtropical regions mostly of the Southern Hemisphere, in New Zealand, Australia, ...
Themeda quadrivalvis Themeda quadrivalvis is a species of grass known by the common names grader grass, habana grass, and kangaroo grass, not to be confused with Themeda triandra, which is ...
Thunbergia alata Thunbergia alata, commonly called Black-eyed Susan vine, is a herbaceous perennial climbing plant species in the Acanthaceae family.
Thunbergia laurifolia Thunbergia laurifolia, Laurel clock vine or Blue trumpet vine, is native to India (Starr et al.
Tragopogon dubius Tragopogon dubius (western salsify, western goat's-beard, wild oysterplant, yellow salsify, yellow goat's beard, goat's beard, goatsbeard, common salsify, salsify) is a species of Sals...
Triadica sebifera Triadica sebifera, also known as Sapium sebiferum, is commonly known as the Chinese tallow tree, Florida aspen, chicken tree, gray popcorn tree, and cand...
Trianthema portulacastrum Trianthema portulacastrum is a species of flowering plant in the ice plant family known by the common names desert horse purslane, black pigweed, and giant pigweed.
Tribulus terrestris Tribulus terrestris is a flowering plant in the family Zygophyllaceae, native to warm temperate and tropical regions of the Old World in southern Europe, southern Asia, throughout Africa, an...
Tridax procumbens Tridax procumbens is a species of flowering plant in the daisy family.
Vinca Vinca (Latin: vincire "to bind, fetter") is a genus of six species in the family Apocynaceae, native to Europe, northwest Africa and southwest Asia.
Viola arvensis Viola arvensis is a species of violet known by the common name field pansy.
Viola labradorica Viola labradorica, commonly known as Alpine dog violet, Alpine violet, American dog violet, dog violet, and Labrador violet, is a perennial native to eastern C...
Vitex rotundifolia Vitex rotundifolia (beach vitex) is a species of Vitex that is native to seashores throughout the Pacific.
Vulpia myuros Vulpia myuros, the rat's-tail fescue, is an annual grass species of the genus Vulpia.
Wakame Wakame is a sea vegetable, or edible seaweed.
Water caltrop The water caltrop, water chestnut, buffalo nut, bat nut, devil pod, ling nut, singharaسنگھارا or pani-phal is any of three extant species of the genus Trapa: Trapa natans, T. bicornis and the endangered Trapa rossica.
Water hyacinth Eichhornia, water hyacinth, is a genus of aquatic flowering plants in the family Pontederiaceae.
Watsonia meriana Watsonia meriana is a species of flowering plant in the iris family (Iridaceae) known by the common name Bulbil bugle-lily.
Weed A weed is a plant considered undesirable. Weeds are commonly unwanted plants in human-controlled settings, such as farm fields, gardens, lawns, and parks. Weeds have no botanical classification value, since a plant that is a weed in one context is not a weed when growing where it is wanted.
White Bryony Bryonia alba, white bryony, is a vigorous vine in the family Cucurbitaceae (squashes and melons) from Europe and Northern Iran.
Whitetop Whitetop or hoary cress is native to western Asia and eastern Europe and is an invasive species in North America, introduced by contaminated seeds in the early 1900s.
Wild rice Wild rice (also called Canada rice, Indian rice, and water oats) are four species of grasses forming the genus Zizania, and the grain which can be harvested from them.
Wisteria Wisteria (also spelled Wistaria or Wysteria) is a genus of flowering plants in the pea family, Fabaceae, that includes ten species of woody climbing bines native to the E...
Xanthium spinosum Xanthium spinosum is a species of flowering plant in the aster family known by many common names, including spiny cocklebur, prickly burweed and Bathurst burr.
Yorkshire Fog Yorkshire Fog or Velvet Grass, Holcus lanatus, is a perennial grass in the Poaceae Family.
Zantedeschia aethiopica Zantedeschia aethiopica (common names calla lily, arum lily; a.k.a. varkoor, an Afrikaans name meaning 'pig's ear') is a species in the family Araceae, native to southe...
Ziziphus mauritiana Ziziphus mauritiana, also known as Ber, Chinee Apple, Jujube, Indian plum and Masau is a tropical fruit tree species belonging to the family Rhamnaceae.
Zygophyllum fabago Zygophyllum fabago is a species of plant known by the common name Syrian bean-caper.