As classified in WFO snapshot
June 2023
Warning: older classification
form
Cynanchum sibiricum f. hypopsilum
Nakai & Kitag.
This form name was first published in Rep. Exped. Manchoukuo Sect. IV, Pt. 1, Pl. Nov. Jehol. 1: 43. 1934 [Nov 1934]
This form name has been reclassified since this snapshot. Its current preferred usage is a synonym .