kingdom: Plantae >
subkingdom: Pteridobiotina Britton & Brown >
phylum: Tracheophyta >
class: Magnoliopsida >
family: Convolvulaceae Juss. >
subfamily: Convolvuloideae Burnett >
genus: Ipomoea L. >
China (S-Guizhou, SW-Sichuan, S-Yunnan); Bhutan; India (Arunachal Pradesh, Assam, Manipur, West Bengal); Myanmar (Bago, Mandalay); N-Thailand