Leptochilus gracilis (Polypodiaceae), a new fern species from southeastern Yunnan, China based on morphological and molecular evidence

被引：6

作者：

Liang, Zhen-Long ^{[1
]}

Shui, Yu-Min ^{[2
]}

Chen, Wen-Hong ^{[2
]}

Yu, Zhi-Yong ^{[3
]}

Zhang, Liang ^{[2
]}

Zhang, Li-Bing ^{[4
]}

机构：

[1] Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, POB 416, Chengdu 610041, Sichuan, Peoples R China

[2] Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog EastAsia, Kunming 650201, Yunnan, Peoples R China

[3] Yunnan Jinping Fenshuiling Natl Nat Reserve, Honghe 661500, Yunnan, Peoples R China

[4] Missouri Bot Garden, 4344 Shaw Blvd, St Louis, MO 63110 USA

来源：

PHYTOTAXA | 2020年 / 468卷 / 01期

关键词：

Fern phylogeny; Jinping county; The Leptochilus ellipticus complex; Yunnan; MICROSOROID FERNS; GENUS;

D O I：

10.11646/phytotaxa.468.1.7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A new fern species, Leptochilus gracilis, is described and illustrated from southeastern Yunnan, China Leptochilus gracilis is most similar to L. ellipticus. Compared with L. ellipticus, L. gracilis has a smaller habit with fronds less than 20 cm long, laminae with only one or two pairs of lobes, and midrib of lobes at angles of 45-60 degree with rachis. In contrast, L. ellipticus has a larger habit with fronds more than 30 cm long, laminae with (3-)4-9 pairs of lobes, and midrib of lobes at angles ca. 80-90 degree with rachis. A phylogenetic analysis based on four plastid markers confirmed the recognition of the new species and resulted in an isolated subclade of L. ellipticus Glade.

引用

页码：112 / 120

页数：9

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