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Issue: Vol. 186 No. 4: 2 December 2014
Type: Article
Published: 2014-12-02
DOI: 10.11646/phytotaxa.186.4.2
Page range: 188–198
Abstract views: 15
PDF downloaded: 1

Sinalliaria, a new genus of Brassicaceae from eastern China, based on morphological and molecular data

College of Life & Environment Sciences, Hangzhou Normal University, No. 16 Xuelin Street, Xiasha Higher Educational District, Hangzhou, Zhejiang, 310036, People’s Republic of China.
Administration of Zhejiang Qingliangfeng National Natural Reserve, Tangchang Road of Changhua Township, Lin’an, Zhejiang, 311321, People’s Republic of China.
College of Life & Environment Sciences, Hangzhou Normal University, No. 16 Xuelin Street, Xiasha Higher Educational District, Hangzhou, Zhejiang, 310036, People’s Republic of China.
College of Life & Environment Sciences, Hangzhou Normal University, No. 16 Xuelin Street, Xiasha Higher Educational District, Hangzhou, Zhejiang, 310036, People’s Republic of China.
Cruciferae microscopic and morphological characters new combination nrDNA and cpDNA taxonomy

Abstract

Sinalliaria is described here as a new genus of the family Brassicaceae from eastern China, based on the morphological characters and molecular sequences. Sinalliaria differs from the related genus Orychophragmus in having basal leaves petiolate, simple or rarely with 1‒3 lateral lobes (not pinnatisect); cauline leaves petiolate, cordate at base (not sessile, auriculate or amplexicaul at base); petals obovate to narrowly obovate, claw inconspicuous (not broadly obovate, with a claw as along as sepal); siliques truncate (not long-beaked) at apex. The microscopic characters of seed testa also show significant differences between Sinalliaria and Orychophragmus. Phylogenetic evidence from DNA sequences of nuclear ribosomal ITS and plastid region trnL-trnF indicates that Sinalliaria is a distinct group related to Orychophragmus and Raphanus, but these three genera do not form a clade. The new genus Sinalliaria is endemic to eastern China and has only one species and one variety. The new combinations, S. limprichtiana (Pax) X. F. Jin, Y. Y. Zhou & H. W. Zhang and S. limprichtiana var. grandifolia (Z. X. An) X. F. Jin, Y. Y. Zhou & H. W. Zhang are proposed here.