missouribotanicalgarden.org
Missouri Botanical Garden
https://www.missouribotanicalgarden.org › PlantFinder › PlantFinderDetails.aspx?taxonid=281541
missouribotanicalgarden.org
Missouri Botanical Garden
https://www.missouribotanicalgarden.org › PlantFinder › PlantFinderDetails.aspx?taxonid=281541
highcountrygardens.com
en.wikipedia.org
garden.org
The National Gardening Association
https://garden.org › plants › view › 87788 › Northern-Dragonhead-Dracocephalum-ruyschiana
odysseyplants.com
odysseyplants.com
https://odysseyplants.com › dracocephalum-ruyschiana
plantlust.com
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:446513-1
plants.tagawagardens.com
plants.tagawagardens.com
https://plants.tagawagardens.com › 12130017 › Plant › 2309 › Dragonhead
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:446513-1 › general-information
species.wikimedia.org
species.wikimedia.org
https://species.wikimedia.org › wiki › Dracocephalum_ruyschiana
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