Figuras 1-7 - uploaded by Guilherme Ceolin
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Collaea aschersoniana: 1) Ramo. 2) Estandarte. 3) Ala. 4) Peça da carena. 5) Cálice com pedicelo. 6) Androceu. 7) Gineceu.
Source publication
We carried out a floristic survey and taxonomic study of the genus Collaea DC. (Leguminosae, Papilionoideae) in South Brazil. This genus occurs exclusively in South America, including six or seven species found in Peru, Bolivia, Brazil, Paraguay, central and northern Argentina. In South Brazil, three species were confirmed: Collaea aschersoniana (T...
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Citations
... Collaea speciosa may be noted as a subshrub by its 3-foliate leaves, lanceolate leaflets, inflorescence with short peduncle (0.3-0.2 cm long), red flowers and calyx tomentose. According to Ceolin & Miotto (2009), this species is generally isolated, occupying wooded fields, gallery forest and roadsides. Subshrub, branches cylindrical; stipule linear, elliptical, stipel not observed, petiole 2-4 cm long, rachis 0.1-0.2 ...
This study aims to evaluate the richness of the Papilionoideae species found in the Parque Estadual das Várzeas do Rio Ivinhema (PEVRI), which is located in the southeast region of Mato Grosso do Sul, Brazil, and investigate if the habits of this Leguminosae group vary in different formations of the park. Monthly collections, including all habits, were made by walking along pre-established trails, from September 2004 to September 2009. The PEVRI includes Seasonal Semideciduous Forest, Seasonal Alluvial Semideciduous Forest and fields. Twenty-three species distributed in 16 genera and 5 tribes were recorded. Phaseoleae was noted with 7 genera, followed by Dalbergieae with 6 genera and Desmodieae, Indigofereae and Crotalarieae with only 1 genus in each species. Among the 16 recorded genera, Crotalaria L. (4), Aeschynomene L. (3), Desmodium Desv., and Vigna Savi (2) were the most representative. The Papilionoideae with herbaceous and subshrub habits were predominant in humid and pastures, while arboreous species and lianas were recorded in the Seasonal Semideciduous Forest. Nine species of Papilionoideae were recorded in humid grasslands, eight species in Seasonal Semideciduous Forest, and only one in Alluvial Semideciduous Forest. Papilionoideae found in the PEVRI have also been recorded in cerrado, Seasonal Semideciduous Forest and Pantanal, except Andira inermis, which does not present a reference for Seasonal Alluvial Semideciduous Forest.
A new species of Collaea DC. is described. C. riparia is a reophytic species that occurs in rocky areas, in riverbeds and banks prone to flooding. An identification key to the related species, as well as description, illustrations, data on flowering and fruiting periods, and habitat are presented.
