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Acta Botanica Brasilica

Print version ISSN 0102-3306On-line version ISSN 1677-941X


SATIRO, Larissa Nascimento  and  ROQUE, Nádia. The family Euphorbiaceae on the sand dunes of the middle São Francisco River, Bahia State, Brazil. Acta Bot. Bras. [online]. 2008, vol.22, n.1, pp.99-118. ISSN 1677-941X.

Euphorbiaceae is one of the most representative families in the caatinga especially on the sand dunes of the middle São Francisco River, in the state of Bahia, Brazil. The survey of Euphorbiaceae species from this formation was based on field work and herbaria collections. The family is represented in the study area by 20 species: Alchornea Swartz (one species); Chamaesyce S.F. Gray (3); Cnidoscolus Pohl (4); Croton L. (4); Dalechampia L. (1); Jatropha L. (3); Manihot Miller (2); Sapium P. Browne (1) and Tragia L. (1). Chamaesyce alsinifolia (Boiss.) Sátiro, C. chamaeclada (Ule) Sátiro, Croton paludosus Mull. Arg., Manihot catingae Ule and M. heptaphylla Ule are endemic to the state of Bahia. Cnidoscolus quercifolius Pohl and C. urnigerus (Pax) Pax are restricted to caatinga regions of Brazil. Identification keys, morphological descriptions, illustrations, notes on geographic distribution, habitat and comments on each species are provided.

Keywords : Euphorbiaceae; sand dunes; middle São Francisco River; flora.

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