Indigofera Morroensis (Leguminosae, Papilionoideae): A New Species from the Drylands of Northeastern Brazil

IF 0.9 3区生物学 Q4 EVOLUTIONARY BIOLOGY

Systematic Botany Pub Date : 2023-03-28 DOI:10.1600/036364423X16758873924054

Rita de Cássia Alves Menezes São Paulo, Cristiane Snak, L. P. de Queiroz

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Abstract

Abstract Indigofera is a genus of the tribe Indigofereae (Leguminosae, Papilionoideae), with approximately 750 species distributed across tropical and subtropical regions of the world. In Brazil, the genus is associated mostly with the seasonally dry biomes of Caatinga and Cerrado, where 12 out of the 13 species recorded in Brazil occur. A close examination of the morphological variation in the Caatinga species showed that more than one species could be identified among the specimens referred to as I. blanchetiana. We thus propose the new species I. morroensis, which is distinguishable from I. blanchetiana by its habit, the number, shape, and hairiness of leaflets, and shape of the fruit. Indigofera morroensis occurs on sand dunes of the Morro do Chapéu municipality in Bahia state and its conservation status was assessed as Endangered. We provide the description, illustration, taxonomic comments, and distribution map for this new species, as well as an identification key for the species from Northeastern Brazil, including those that occur in the Caatinga.

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摩洛哥靛蓝（豆科，蝶形花科）：巴西东北部旱地的一个新种

靛蓝属(Indigofera)是靛蓝科(豆科，凤蝶科)的一个属，大约有750种，分布在世界的热带和亚热带地区。在巴西，该属主要与Caatinga和Cerrado的季节性干旱生物群落有关，在巴西记录的13种中有12种发生在那里。对Caatinga种的形态变异进行了仔细的研究，发现在被称为I. blanchetiana的标本中可以鉴定出不止一个种。因此，我们提出了一个新种morroensis，它可以通过其习性，小叶的数量，形状，毛羽和果实的形状来区分。morroensis生长在巴伊亚州Morro do chapsamu市的沙丘上，其保护状况被评估为濒危物种。我们提供了该新种的描述、图解、分类评论和分布图，以及巴西东北部包括Caatinga地区的物种的鉴定密钥。

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来源期刊

Systematic Botany 生物-进化生物学

CiteScore

1.80

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Botany Monographs is a series of peer-reviewed taxonomic monographs and revisions published the American Society of Plant Taxonomists. ISSN 0737-8211, ISBN prefix 978-0-912861. No; volumes of Systematic Botany Monographs must be ordered separately. ASPT membership inludes only a subscription to the quarterly journal Systematic Botany. SBM is supported by sales, author"s subsidies, and donations.