A remarkable new species of Liparis (Orchidaceae) from China and its phylogenetic implications.
A remarkable new species of Liparis (Orchidaceae) from China and its phylogenetic implications.
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中国兰科植物一新种及其系统发育意义。
DOI：
10.1371/journal.pone.0078112
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Yan H
中科院分区：
文献类型：
--
作者：
Li L;Yan H
本文在形态学和分子系统发育分析的基础上，将平香Liparis pingxiangensis正式描述为中国广西的一个新种。它很容易与近缘种区分，有强烈弯曲的柱，没有柱翅，宽菱形椭圆形的唇，基部有2钩生的愈伤组织。特别地，它最显著地不同于它的同系物，在具有两个由长而突出的尾状花序（不是柄）附着的花粉，到一个明显的粘盘。据我们所知，这种类型的传粉体在任何其他种类的Liparis中都没有发现，并且在具有蜡质传粉体的兰花中也是独一无二的。然后我们进行系统发育分析，以确定这个神秘的物种的系统位置。基于核糖体ITS和质体matK DNA序列数据的分子生物学研究表明，萍乡乳草是一个独立的物种，与乳草及其亲缘种形成独立的姊妹谱系（93% BS, 1.00 BPP）。鉴于以往的工作，这些发现对更好地理解主要基于营养特征的Malaxideae的良好支持模式具有重要意义。
In the present study, we formally describe Liparis pingxiangensis as a new species from Guangxi, China on the basis of morphological and molecular phylogenetic analyses. It is easily distinguished from closely related species by strongly curved column without column wings, and broadly rhombic-elliptic lip with 2 uncinate calli at the base. In particular, it differs most markedly from its congeners in possessing two pollinia attached by long and prominent caudicles (not stipes), to a distinct sticky disc. This type of pollinarium, as far as we know, is not found in any other species of Liparis, and is also unique among the orchids with waxy pollinia. We then proceeded to a phylogenetic analysis to ascertain the systematic position of this enigmatic species. Molecular study based on nuclear ribosomal ITS and plastid matK DNA sequence data supports L. pingxiangensis as a distinct species, which forms an independent lineage sister to L. nervosa and its allies (93% BS, 1.00 BPP). In the light of previous work, the findings have important implications for a better understanding of the well-supported pattern mainly based on vegetative features in Malaxideae.
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影响因子：
3
作者：
Cameron, KM
通讯作者：
Cameron, KM
影响因子：
5.8
作者：
Posada, D;Crandall, KA
通讯作者：
Crandall, KA
DOI：
10.1111/j.1096-0031.1996.tb00196.x
发表时间：
1994-09-01
期刊：
CLADISTICS-THE INTERNATIONAL JOURNAL OF THE WILLI HENNIG SOCIETY
影响因子：
--
作者：
FARRIS, JS;KALLERSJO, M;BULT, C
通讯作者：
BULT, C
影响因子：
3.7
作者：
Liu, Zhong-Jian;Chen, Sing-Chi;Chen, Li-Jun
通讯作者：
Chen, Li-Jun
影响因子：
5.4
作者：
SUN, Y;SKINNER, DZ;HULBERT, SH
通讯作者：
HULBERT, SH