A synoptic revision of Inversodicraea (Podostemaceae)

IF 0.6 4区生物学 Q4 PLANT SCIENCES

Blumea Pub Date : 2017-01-01 DOI:10.3767/BLUMEA.2017.62.02.07

Martin Cheek, A. Feika, Aiah Lebbie, D. Goyder, B. Tchiengue, O. Sene, P. Tchouto, X. V. D. Burgt

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引用次数: 33

Abstract

Six new species of Inversodicraea (I. feika from Sierra Leone, I. liberia from Liberia, and I. ebo, I. eladii, I. tchoutoi, and I. xanderi from Cameroon) are described as new to science in the context of a synoptic revision of this African genus, now comprising 30 species, including I. cussetiana comb. nov., newly transferred from Macropodiella. Inversodicraea is now equal in number of species to Ledermanniella (as redefined), as the largest genus of the family in Africa. Terete or slightly dorsiventrally flattened leaf petioles (not sheathing and/or stipulate) are newly discovered to distinguish the genus from Ledermanniella, in addition to the presence of scale-leaves. Inversodicraea boumiensis, I. annithomae, and I. bosii are redelimited in this paper. Examples of species hybrids are discussed. Eighteen species are point endemics. A key and IUCN 2012 standard conservation assessments for all species are included. 28 of the 30 species have been assessed as Threatened or Near Threatened. Hydroelectric projects are the biggest source of extinction risk to species of the genus, threatening 19 of the 30 species.

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背竹科背竹属植物概论订正

在对这一非洲属进行综合修订的背景下，将6个新种(来自塞拉利昂的I. feika，来自利比里亚的I. liberia，以及来自喀麦隆的I. ebo, I. eladii, I. tchoutoi和I. xanderi)描述为科学上的新种，目前包括I. cussetiana comb在内的30种。11月，刚从巨足科转移过来。在物种数量上，Inversodicraea现在与Ledermanniella(重新定义)相等，是非洲该科中最大的属。除了鳞片状叶的存在外，新发现的圆柱状或稍微背向扁平的叶柄(无鞘和/或规整)将该属与Ledermanniella区分开来。本文重新界定了布米氏背背虫、土背虫和波背虫。讨论了物种杂交的例子。18种是当地特有的。包括所有物种的关键和国际自然保护联盟2012年标准保护评估。30个物种中有28个已被评估为受威胁或近受威胁。水电项目是该属物种灭绝风险的最大来源，威胁到30个物种中的19个。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Blumea 生物-植物科学

CiteScore

1.90

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： An international electronic-only journal on the biodiversity, evolution and biogeography of plants (systematics, floristics, phylogeny, morphology, anatomy). For floristic studies, the focus is on tropical Africa south of the Sahara; tropical Southeast Asia with a strong emphasis on Malesia; South America with emphasis on the Guianas. The language is English.