Xyridaceae of Viruá National Park, Roraima state, Brazil
Tipo de material:
ArtigoAssunto(s): Recursos online:
Em: Rodriguésia (Brazil) v. 66(2) p. 523-553; (2015)Sumário:
Abstract
A taxonomic treatment of the Xyridaceae in the Viruá National Park is presented. Located in Roraima state,
northern Brazil, the park comprises a mosaic of lowland vegetation types, including forests, wetlands, and
one of the largest continuous areas of campinarana in the Brazilian Amazon Basin. Xyridaceae are represented
in the park by 20 species in the genera Abolboda and Xyris. Although the four species of Abolboda are widespread,
most of the Xyris species (75%) are endemic to Amazonian open vegetation formations, such as
campinaranas and savannas. This study was based on field, herbarium, and scanning electron microscopy
research. The taxonomic treatment includes identification keys to the genera and species, morphological
descriptions, SEM images of seeds for Xyris species, iconography, geographic distribution and comments
on the ecology of the species. The poorly known Xyris connosepala is synonymized in Xyris guianensis.
Key words: Amazon, campinarana, new synonym, seed, white sand vegetation
| Tipo de material | Biblioteca atual | Número de chamada | Informaçaõ do volume | URL | Situação | Devolução em | Código de barras |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri | 2015 66(2) | Texto integral (PDF) | Não pode ser emprestado | 2025-1431 |
Publicação on-line; Bibliography p. 550-552 (77 ref.); 2 tables; 7 illus.; Summary (En)
Abstract
A taxonomic treatment of the Xyridaceae in the Viruá National Park is presented. Located in Roraima state,
northern Brazil, the park comprises a mosaic of lowland vegetation types, including forests, wetlands, and
one of the largest continuous areas of campinarana in the Brazilian Amazon Basin. Xyridaceae are represented
in the park by 20 species in the genera Abolboda and Xyris. Although the four species of Abolboda are widespread,
most of the Xyris species (75%) are endemic to Amazonian open vegetation formations, such as
campinaranas and savannas. This study was based on field, herbarium, and scanning electron microscopy
research. The taxonomic treatment includes identification keys to the genera and species, morphological
descriptions, SEM images of seeds for Xyris species, iconography, geographic distribution and comments
on the ecology of the species. The poorly known Xyris connosepala is synonymized in Xyris guianensis.
Key words: Amazon, campinarana, new synonym, seed, white sand vegetation
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