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Cynanchum hubeiense (Apocynaceae), a new species from Hubei, China

摘要


Cynanchum hubeiense Wen. B. Xu, B.S. Xia & J.Y. Shen (Apocynaceae), a new species from Luotian County, Hubei Province, China, is described and illustrated. It is similar to C. callialatum Buch.-Ham. ex Wight, C. decipiens Schneid., C. brevipedunculatum J.Y.Shen and C. longipedunculatum M.G.Gilbert & P.T.Li, but differs from them by slightly angulate follicles, the shorter peduncle, corolla white to reddish, corolla lobes ovate, planar, stems without two leaflike stipules per node, and stems sparsely puberulent. Photographs, distribution, comparison with related species, and conservation assessment are provided for this rare vine species.

參考文獻


Shen, J.Y., X.D. Ma, W.G. Wang and J.P. Shi. 2019. Cynanchum brevipedunculatum, a new species of Apocynaceae from Yunnan, China. Taiwania 64(3): 217–220.
Endress, M.E., U. Meve, D.J. Middleton and S. Liede-Schumann. 2018. Apocynaceae. In: Kadereit, J. W., & Bittrich, V., (eds), Flowering Plants. The Families and Genera of Vascular Plants. Eudicots, Apiales, Gentianales (excl. Rubiaceae). Springer, Heidelberg, New York.
Fishbein, M., T. Livshultz, S.C.K. Straub, A.O. Simões, J. Boutte, A. McDonnell and A. Foote. 2018. Evolution on the backbone: Apocynaceae phylogenomics and new perspectives on growth forms, flowers, and fruits. Am. J. Bot. 105(3): 495–513.
Jiang, L.Q., Y.Y. Li, X.X. Zhu, Y.H. Wang and H. Peng. 2018. Vincetoxicum xinpingense (Asclepiadeae, Asclepiadoideae, Apocynaceae), a new species from Yunnan Province, China. Phytotaxa 361(1): 56–64.
Khanum, R., S. Surveswaran, U. Meve and S. Liede. 2016. Cynanchum (Apocynaceae: Asclepiadoideae): a pantropical Asclepiadoid genus revisited. Taxon 65(3): 467–486.

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