Two New Species of Swartzia (Leguminosae) from the Amazon Basin of Brazil, with Notes on the Genus and a Key to the Unifoliolate Species
2004; American Society of Plant Taxonomists; Volume: 29; Issue: 2 Linguagem: Inglês
10.1600/036364404774195548
ISSN1548-2324
Autores Tópico(s)Plant and Fungal Species Descriptions
ResumoAbstract A brief discussion of the systematics of Swartzia, a large neotropical genus of trees and shrubs, is given in preparation for a comprehensive phylogenetic and revisionary study of the genus. Two new species from Brazilian Amazonia, Swartzia coriaceifolia and Swartzia juruana, are described and illustrated. The former was collected in the basin of the Rio Negro in the state of Amazonas and possesses morphology allying it with S. brachyrachis and its relatives. Swartzia juruana is known from a single collection from the upper Rio Jurua basin of Acre and is closely related to the more widespread species S. jorori. Morphological characters of the new species are discussed, and a key to the unifoliolate species and varieties of Swartzia is provided.
Referência(s)