Apios delavayi var. gracillima (Dunn) B.Pan bis
kingdom: Plantae >
subkingdom: Pteridobiotina Britton & Brown >
phylum: Tracheophyta >
class: Magnoliopsida >
order: Fabales Bromhead >
family: Fabaceae >
genus: Apios Fabr. >
species: Apios delavayi Franch. >
China South-Central