Hohenheimer Gärten (Die Pflanzen der Hohenheimer Gärten)
International Plant Names Index (IPNI) | Lifewatch regional portal
International Plant Nutrition Institute | ECHOcommunity.org
iPhylo: Linnaeus meets the Internet: PLoS + Botany = #fail
Teucrium halacsyanum Heldr.
Plants and the People Who Name Them: The International Plant Names Index and BHL – Biodiversity Heritage Library
Nomenclatural note — spelling correction on an epithet in Coulteria (Leguminosae: Caesalpinioideae)
IPNI UK on X: "Kew databases explained: #IPNI provides the plant names backbone #WCVP applies taxonomy to the names #POWO combines the names and taxonomy and adds images, description, floristics, medicinal uses #