Research Paper

Aristolochia geantha (Aristolochiaceae), a new species from Yunnan, China

Zi-Rui Guo, Yi-Fan Wang, Joyce G. Onyenedum, Jing Li

Published on: 07 April 2025

Page: 293 - 300

DOI: 10.6165/tai.2025.70.293

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2025 vol.70 no.2
pp.293-300

Abstract

A new species of Aristolochiaceae, Aristolochia geantha Z.R. Guo & Y.Fan Wang, from Southwest China, is described herein. Detailed scientific illustrations, color figures, and a key are provided. The species is morphologically proximate to A. petelotii, but can be readily distinguished by its flat, cupuliform calyx limb, which adaxially covered with golden or rusty villous hairs, a velvety pink upper tube, unusually elongated peduncle, which extends from the basal lignified stems, and distinctive stripe patterns radiating from the throat to the calyx limb margin. Comparative assessments with other congeners are provided to establish its unique taxonomic status within the genus.

Keyword: Aristolochia austroyunnanensis, Aristolochia petelotii, cauliflorous, liana, morphology, Siphsia (Isotrema)

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