Monographs Details: Rhynchospora biflora Boeckeler
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Cyperaceae
Description:Distribution and Ecology - Distribution. Coastal mountain range in southern Brazil, from Rio de Janeiro southwestwards to Santa Catarina, and disjunctively in Venezuela, where the localities are scattered in Aragua and central Guayana Highland. VENEZUELA. Aragua: Parque Nacional Henry Pittier, above Guamitas to summit of La Mesa, above El Limon, 2200 m alt, Steyermark 89844 (NY, VEN); Bolívar: Cumbre del Auyantepuí, Alto Río Caroní, 2500 m alt, Cardona 2647 (NY, VEN); Chimanta Massif, Central Section, along west branch of headwaters of Río Tirica, above Upper Falls, 2090 m alt, Steyermark & Wurdack 889 (F, NY); Quebrada Sororopán, between Sta. Teresita de Kavanayen and Río Tek-Yunsén, 1375 m alt, Steyermark 60831 (F, NY). BRAZIL. Espirito Santo: Mun. de Castelo Branco, between Braco do Sul and Forno, Brade 19285 (NY, RB). Rio de Janeiro: Serra dos Orgães, Pedra do Sino, Glaziou 4289 (C). São Paulo: Serra da Bocaina, 1650 m alt, Brade 20959 (NY, RB); between São Paulo and Santos, Pereira 5967 (NY, RB). Santa Catarina: 4 km S of Campo Alegre, on road to Jaraguá do Sul, 900-1000 m alt, Smith & Klein 7326 (NY, US); Sao Francisco do Sul, Morro do Campo Alegre, 1200 m alt, Reitz & Klein 9778 (NY); S. Joachim, Bom Jardim, Curral Falso, 1500 m alt, Reitz & Klein 7749 (NY).

Discussion:

Rhynchospora sororopana Steyermark, Fieldiana Bot. 28(1): 46. 1951. Type. Steyermark 60831 (F) from Quebrada Sororopan, BolĂ­var, Venezuela.

Type. Brazil, Glaziou 42891 (C).

New to the flora of northern South America, this species has hitherto been recorded only from the coastal mountain range in southeastern Brazil. The localities in both Brazil and Venezuela suggest that this species belongs to a group of relict species, which prefer a cool climate. In spite of the great geographic separation, the Venezuelan plants do not differ at all from Brazilian ones.

Distribution:Venezuela South America| Brazil South America| Guyana South America|