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A taxonomic revision of Cynanchumthesioides (Apocynaceae) with two new synonyms
Cai-Fei Zhang1,2, Dong-Juan Zhang1,2,3, Miao Liao1,2,3
1CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Wuhan Botanical Garden, Chinese Academy of Sciences Wuhan China.
Abstract:
Cynanchumthesioides, a species widely distributed in north-eastern Asia, is revised to include two new synonyms: Vincetoxicumsibiricumf.linearifolium, described from Shandong, China in 1877, but long neglected and Cynanchumgobicum, previously believed to be endemic to Mongolia. Typification for C.thesioides and all its synonyms is given, including lectotypification of V.sibiricumvar.australe and V.sibiricumf.linearifolium. An updated description, three figures showing the diverse habitats, habits and variation in morphological characters, and a general distribution map are also provided.
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