Reinaldo Aguilar 1014 Det. by: G. Davidse, 1994 Phenology: FL 3 March 1992 09:25N 83:03W 450 m LIMON, TALAMANCA P.N. Cordillera de Talamanca Valle de Talamanca. Hierba rastrera. Flor verde, anteras blancas.
William Haber 9728 Det. by: G. Davidse, 1992 Phenology: FF 5 January 1990 10:18N 84:47W 1550 m PUNTARENAS, PUNTARENAS R.B. Monteverde Cordillera de Tilarán. Herb, scrambling along shaded roadside, rooting at nodes, upright culms 30-60 cm
William Haber 8679 Det. by: R. Pohl, I 1989 Phenology: LR 4 September 1988 10:22N 84:51W 1300 m GUANACASTE, TILARAN Cordillera de Tilarán. Herb, 20-50 cm, pasture. Flower with green calyx and white stimga. Fruit green, covered with recurved spines.