Vincetoxicum auritum is a species of liana in the family Apocynaceae. It is endemic to the island of Hainan in southern China.Flora of China Vol. 16 Page 253 白水藤 bai shui teng Pentastelma auritum Tsiang & P. T. Li in Chun et al., Fl. Hainan. 3: 577. 1974.
It was first described Pentastelma auritum in 1974, and placed in the monotypic genus Pentaselma. In 2018 it was reclassified into genus Vincetoxicum as V. auritum.
The species is listed as Critically Endangered.
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