Croton L. (Crotonoideae, Euphorbiaceae) in a protected area in Northeast Brazil

IF 1 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Biota Neotropica Pub Date : 2023-01-01 DOI:10.1590/1676-0611-bn-2023-1506

Joesili Oliveira, Yuri Rossine, Rayane Ribeiro, Sarah Athiê-Souza

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Abstract

Abstract Croton is the largest genus of Crotonoideae Burmeist. (ca. 1200 species), with approximately 300 species distributed in all the phytogeographic domains in Brazil. The Chapada of Araripe Environmental Protection Area (CA-EPA) is one of the largest protected areas in northeastern Brazil and comprises many different types of vegetation. Considering the expressive representation of Croton in that northeastern region and its morphological complexity, we carried out a taxonomic study of the species occurring in the CA-EPA. The analysis of collections deposited in regional herbaria, together with field observations, revealed 18 Croton species, five of which had never been cited as occurring in the study area; seven of those taxa are endemic to the Brazilian semiarid region. Croton species were recorded in all of the vegetation types in the CA-EPA, especially in the “carrasco” and “caatinga” vegetation. The plants habits, the shapes of their stipules, extrafloral nectaries, indumenta, and staminate and pistillate sepals were important characteristics for their differentiation.

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巴西东北部某保护区巴豆属植物(巴豆科大戟科)

Croton是Crotonoideae Burmeist中最大的属。(约1200种)，其中约300种分布于巴西的所有植物地理域。Araripe环境保护区(CA-EPA)是巴西东北部最大的保护区之一，由许多不同类型的植被组成。考虑到该东北地区Croton的代表性及其形态复杂性，我们对该地区的Croton进行了分类研究。对区域植物标本馆收集的植物进行分析，并结合野外观察，发现18种Croton，其中5种从未在研究区出现过;其中7个分类群是巴西半干旱地区特有的。在CA-EPA的所有植被类型中均有Croton种的记录，特别是“carrasco”和“caatinga”植被。植物习性、托叶形状、花外蜜腺、毛被、雄蕊和雌蕊萼片是其分化的重要特征。

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来源期刊

Biota Neotropica BIODIVERSITY CONSERVATION-

CiteScore

2.90

自引率

16.70%

发文量

审稿时长

4-8 weeks

期刊介绍： BIOTA NEOTROPICA is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal"s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Manuscripts are considered on the understanding that their content has not appeared, or will not be submitted, elsewhere in substantially the same form, because once published their copyrights are transferred to BIOTA NEOTROPICA as established in the Copyright Transfer Agreement signed by the author(s).