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Issue: Vol. 257 No. 3: 20 April 2016
Type: Article
Published: 2016-04-20
DOI: 10.11646/phytotaxa.257.3.6
Page range: 280–286
Abstract views: 19
PDF downloaded: 1

Aspidistra revoluta, a new species from limestone areas in Chongqing, China

Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China College of Life Science and Technology, Guangxi University, 100 Daxue Road, Nanning, Guangxi 530004, China
Institute of Medicine Plantation of Chongqing, Chongqing 408400, China
Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
Aspidistra taxonomy pollen morphology chromosome number karyotype

Abstract

Aspidistra revoluta (Asparagaceae) is described and illustrated as a new species from limestone areas in southern Chongqing Municipality, China. The new species can be distinguished from the other Aspidistra species by its unique umbrella-like pistil with large revolute stigma lobes that bent downwards and touch the base of the perigone. A detailed morphological comparison among A. revoluta, A. nanchuanensis and A. carnosa is provided. The pollen grains of A. revoluta are subspherical and inaperturate, with verrucous exine. The chromosome number is 2n = 38, and the karyotype is formulated as 2n = 22m + 6sm + 10st. The average length of chromosome complement is 4.50 μm, and the karyotype asymmetry indexes A1 and A2 are respectively 0.37±0.03 and 0.49±0.01.