Research Paper

Isotrema cangyuanense, a new species of Aristolochiaceae from Yunnan, China

Xing-Da Ma, Wen-Guang Wang, Ji-Pu Shi, Jian-Yong Shen

Published on: 24 August 2023

Page: 323 - 326

DOI: 10.6165/tai.2023.68.323


Isotrema cangyuanense, a new species from Cangyuan, Yunnan, China, is described and illustrated. This species is morphologically similar to I. kunmingense in the shape of leaf blade and calyx, but clearly differs in its epidermal hair of leaf blade, the colour of calyx tube and throat, the surface texture of calyx limb. Photographs and a comparison table of related species are provided.

Keyword: Aristolochia, Flora of Yunnan, Isotrema kunmingense, Isotrema moupinense, new species, China

Literature Cited

Do, T. V., T. H. Luu, S. Wanke and C. Neinhuis 2015 Three new species and three new records of Aristolochia subgenus Siphisia from Vietnam including a key to the Asian species. Syst. Bot. 40(3): 671–691.
DOI: 10.1600/036364415X689140View Article Google Scholar

Gonz?lez, F. 2012 Flor?stica y sistem?tica filogen?tica innecesariamente disyuntas: El caso de Aristolochia, Euglypha y Holostylis (Aristolochiaceae). Revista de la Academia Colombiana de Ciencias Exactas, F?sicas y Naturales 36: 193–202.

Huang, Y.S., Qin, K., Zou, C.Y., Huang, Z.P., Liu, Y. 2022 Isotrema haimingii, a new species of Aristolochiaceae from Dayaoshan Mountain of Guangxi, China. Taiwania 67(3): 380?385.
DOI: 10.6165/tai.2022.67.380View Article Google Scholar

Huber, H. 1993 Aristolochiaceae. In: Kubitzki, K, Rohwer, J.G., Bittrich V. (eds.) The Families and Genera of Vascular Plants II. Flowering plants: Dicotyledons Magnoliid, Hamamelid and Caryophyllid Families, 129–137. Springer-Verlag Berlin Heidelberg, Germany.

Hwang, S.M., Kelly, L.M., Gilbert, M.G. 2003 Aristolochiaceae. In: Wu Z.Y., Raven, P.H. (eds.), Flora of China, vol. 5: 258–269. Science Press, Beijing and Missouri Botanical Garden Press, St. Louis.

IUCN Standards and Petitions Committee 2022 Guidelines for using the IUCN red list categories and criteria. ver. 15. Prepared by the Standards and Petitions Committee.

Lu, C.T., Yang, C.L., Hung, Y.L., Chen, P.H., Wang, J.C. 2022 A taxonomic revision on Isotrema (Aristolochiaceae) in Taiwan, including one new species. Taiwania 67(3): 391?407.
DOI: 10.6165/tai.2022.67.391View Article Google Scholar

Wanke, S., Gonz?lez, F., Neinhuis, C. 2006 Systematics of pipevines: combining morphological and fast-evolving molecular characters to investigate the relationships within subfamily Aristolochioideae (Aristolochiaceae). Int. J. Plant Sci. 167(6): 1215–1227.
DOI: 10.1086/508024View Article Google Scholar

Zhu, X.X., Wang, J., Liao S., Ma, J.S. 2019a Synopsis of Aristolochia L. and Isotrema Raf. (Aristolochiaceae) in China. Biodivers. Sci. 27(10): 1143–1146.
DOI: 10.17520/biods.2019183View Article Google Scholar

Zhu, X.X., Li, X.Q., Liao, S., Du, C., Wang, Y., Wang, Z.H., Yan, J., Zuo, Y.J., Ma, J.S. 2019b Reinstatement of Isotrema, a new generic delimitation of Aristolochia subgen. Siphisia (Aristolochiaceae). Phytotaxa 401(1): 1–23.
DOI: 10.11646/phytotaxa.401.1.1View Article Google Scholar

Zhu, X.X., Li, X.Q., Liao, S., Li, G.D., Ma, J.S. 2019c The taxonomic revision of Asian Aristolochia (Aristolochiaceae) V: Two new species from Yunnan, China. PhytoKeys 130: 93–106.
DOI: 10.3897/phytokeys.130.33933View Article Google Scholar