Rafael Robles 1762 Det. by: M. Grayum, IV 1988 Phenology: FR 28 March 1988 09:30N 83:28W 3819 m LIMON, TALAMANCA P.N. Chirripó Cordillera de Talamanca. Hierba abundante en la cima.
Michael Grayum 8183 Det. by: M. Grayum, X 1987 Phenology: FL 12 March 1987 09:33N 83:45W 3400 m SAN JOSE, PEREZ ZELEDON R.F. Los Santos Cordillera de Talamanca. Large bunch grass, growing in soil pocket on exposed rock outcrop. Spikelets purplish-brown.