Two new species, Eriocaulon cylindratum and Eriocaulon araguaiense, from the Tocantins-Araguaia River basin in the Brazilian Cerrado, are described and illustrated. The species are similar, but they differ mainly in both the shape of the capitula and the floral bracts. Eriocaulon araguaiense has hemispheric heads, and obovate, concave floral bracts. Eriocaulon cylindratum is characterized by ovoid or cylindrical heads, and obtrullate, carinate floral bracts. A key to all known Eriocaulon species from Tocantins-Araguaia river basin is presented.
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1 July 2011
Two New Species of Eriocaulon from the Tocantins-Araguaia River Basin, Brazil
Adriana Luiza Ribeiro de Oliveira,
Claudia Petean Bove
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Systematic Botany
Vol. 36 • No. 3
July 2011
Vol. 36 • No. 3
July 2011
Brazilian Cerrado
Eriocaulaceae
monocots
Poales
taxonomy