Isatis (Ban Lan Gen)
Isatis indigotica
About Isatis (Ban Lan Gen)
Isatis (Ban Lan Gen) (Isatis indigotica) is a herb used in the Taoist Herbal Medicine tradition to help with Sore Throat, Fever, Viral Infection, and Mumps, among 1 other condition it addresses. The aerial parts and leaves are the parts traditionally used, taken internally.
Botanical background
Isatis tinctoria, also called woad (/ˈwoʊd/), dyer's woad, or glastum, is a flowering plant in the family Brassicaceae. It is occasionally known as Asp of Jerusalem. Woad is also the name of a blue dye produced from the leaves of the plant. Woad is native to the steppe and desert zones of the Caucasus, Central Asia to Eastern Siberia and Western Asia (per Hegi) but is now also found in South-Eastern and Central Europe and western...
Source: Wikipedia, via iNaturalist