cabidigitallibrary.org
CABI Digital Library
https://www.cabidigitallibrary.org › doi › 10.1079 › cabicompendium.12040
cabidigitallibrary.org
CABI Digital Library
https://www.cabidigitallibrary.org › doi › 10.1079 › cabicompendium.12040
cal-ipc.org
California Invasive Plant Council
https://www.cal-ipc.org › plants › profile › centaurea-stoebe-profile
calflora.org
en.wikipedia.org
invasivespeciesinfo.gov
National Invasive Species Information Center (NISIC)
https://www.invasivespeciesinfo.gov › terrestrial › plants › spotted-knapweed
plants.usda.gov
USDA Plants Database
https://plants.usda.gov › DocumentLibrary › plantguide › pdf › pg_cest8.pdf
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:77306879-1
fs.usda.gov
florida.plantatlas.usf.edu
Atlas of Florida Plants
https://florida.plantatlas.usf.edu › plant.aspx?id=122
cabidigitallibrary.org
CABI Digital Library
https://www.cabidigitallibrary.org › doi › abs › 10.1079 › cabicompendium.12040
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