Cynanchum acutum is a species of climbing vine swallowworts native to Europe, Africa, and Asia.Flora of China Vol. 16 Page 210 戟叶鹅绒藤 ji ye e rong teng Cynanchum acutum subsp. sibiricum (Willdenow) K. H. Rechinger, Fl. Iranica. 73: 9. 1970.
Taxonomy Two subspecies are often distinguished: Cynanchum acutum subsp. acutum, Europe, Africa, western Asia Cynanchum acutum subsp. sibiricum, Asian
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