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Manihot alterniflora and M. elongata spp. nov. (Euphorbiaceae) and the rediscovery of M. quinquefolia in Caatinga (semiarid) vegetation in Brazil |
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| Authors: | Márcio Lacerda Lopes Martins Paulo Cezar Lemos de Carvalho Carlos Alberto da Silva Ledo André Márcio Amorim |
| Institution: | 1. Centro de Ciências Agrárias, Ambientais e Biológicas, Univ. Federal do Rec?ncavo da Bahia, Cruz das Almas, Bahia, Brazil;2. Embrapa Mandioca e Fruticultura, Cruz das Almas, Bahia, Brazil;3. Depto de Ciências Biológicas, Univ. Estadual de Santa Cruz, Ilhéus, Bahia, Brazil;4. Herbário Centro de Pesquisas do Cacau, CEPEC, Ilhéus, Bahia, Brazil |
| Abstract: | We describe and illustrate two species of Manihot that occur in Caatinga (semiarid) vegetation in Brazil and redescribe and lectotypify M. quinquefolia Pohl, which was only known from a single collection made by J. E. B. Pohl in 1827. Manihot elongata P.Carvalho & M.Martins is widely distributed and Manihot alterniflora P.Carvalho & M.Martins is endangered because of its small populations and restricted area of occurrence. We establish M. quinquefolia as the only species of Manihot in the Caatinga with compound leaves. An identification key is provided for the 13 species of Manihot present in the Caatinga. |
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