William Haber 8635 Det. by: R. Pohl, I 1989 *male* Phenology: FL 28 August 1988 09:57N 85:41W 5 m GUANACASTE, NICOYA Península de Nicoya. Herb, 30-60 m, stems, forming mats in sand, roots at nodes. Bracts green and brown, anthers purple.
William Haber 8967 Det. by: R. Pohl, 1990 Phenology: FR 12 January 1989 10:18N 85:51W 1 m GUANACASTE, SANTA CRUZ R.N.F.S. Tamarindo Península de Nicoya. Herb, 10-30 cm, forming mats on beach sand, spreading by runners. Fruits green to brown.
Michael Grayum 10694 Det. by: M. Grayum, VIII 1994 Phenology: FL 19 August 1994 10:56N 85:52W 1-2 m GUANACASTE, LA CRUZ P.N. Santa Rosa Península de Santa Elena. Rhizomatous grass forming dense turf at back of strand. Female material.
Michael Grayum 10695 Det. by: M. Grayum, VIII 1994 Phenology: FL 19 August 1994 10:56N 85:52W 1-2 m GUANACASTE, LA CRUZ P.N. Santa Rosa Península de Santa Elena. Rhizomatous grass forming dense turf at back of strand. Male material.