Aristolochia yachangensis, a new species of Aristolochiaceae from limestone areas in Guangxi, China

Ya Jin Luo; Shi Dong Ni; Qiang Jiang; Bo Gao Huang; Yan Liu; Yu Song Huang

doi:10.3897/phytokeys.153.52796

Aristolochia yachangensis, a new species of Aristolochiaceae from limestone areas in Guangxi, China

PhytoKeys. 2020 Jul 16:153:49-61. doi: 10.3897/phytokeys.153.52796. eCollection 2020.

Authors

Ya Jin Luo¹, Shi Dong Ni¹, Qiang Jiang¹, Bo Gao Huang¹, Yan Liu^{1

2}, Yu Song Huang^{1

2}

Affiliations

¹ Management Center of Yachang Orchid National Nature Reserve, Baise, Guangxi, 533209, China Management Center of Yachang Orchid National Nature Reserve Baise China.
² Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences, Guilin, Guangxi, 541006, China Guangxi Institute of Botany Guilin China.

Abstract

Aristolochia yachangensis B.G.Huang, Yan Liu & Y.S.Huang, a new species from limestone areas in Guangxi, China, is described and illustrated. It is morphologically most similar to A. fangchi Y.C.Wu ex L.D.Chow & S.M.Hwang, A. petelotii O.C. Schmidt and A. championii Merr. & Chun in shape of leaf blade, anther, gynostemium and inflorescence on old woody stems. However, it can be easily distinguished from the latter by shape of inflorescence, length of upper and lower portions of perianth tube, colour of the limb and throat. A table and a key to distinguish the new species from other morphologically similar Aristolochia species are also provided.

Keywords: Aristolochia; limestone flora; new taxa; north-western Guangxi; taxonomy.

Ya Jin Luo, Shi Dong Ni, Qiang Jiang, Bo Gao Huang, Yan Liu, Yu Song Huang.