Selaginella austro-orientalis (Selaginellaceae), a new species from Southeast China

Selaginella austro-orientalis (Selaginellaceae), a new species from Southeast China
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南方卷柏(卷柏科),中国东南部一新种

DOI:
10.11646/phytotaxa.579.2.2
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发表时间:
2023-01-17
期刊:
影响因子:
1.1
通讯作者:
Zhou, Xin-Mao
Zhou, Xin-Mao
中科院分区:
生物学4区
文献类型:
--
作者:
Wei, Hong-Jin;Chen, Bin;Zhou, Xin-Mao

文献摘要

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卷柏属Heterostachys,尤其是S.异穗草组(Sect. Heterostachys)和S.中国卷柏属(Selaginella)的一个亚属--四角竹亚科(Tetragonostachyae),是中国卷柏属(Selaginella)中分类学上最困难的亚属。本文报道了南方卷柏(Selaginella austro-orientalis)一新种。对中国东南部的异穗草属(Heterostachys)植物进行了形态学和系统发育学研究。在形态上,新种与S.异穗草属,但不同之处在于它的宽卵形的腹面叶,先端稍骤尖,只有腹面有大孢子囊的孢子叶球。
Selaginella subg. Heterostachys, especially S. sect. Heterostachys and S. sect. Tetragonostachyae, represents the most taxonomically difficult subgenus of Selaginella in China. Here, Selaginella austro-orientalis, a new species in S. sect. Heterostachys from Southeast China is described and illustrated based on morphological and phylogenetic studies. Morphologically, the new species is most similar to S. heterostachys, but differs by its broadly ovate ventral leaves with slightly cuspidate apex and strobili with megasporangia only at ventral side.