Jens Bittner 1783 Det. by: B. Hammel, XII 1995 Phenology: 13 March 1993 09:20N 83:13W 2200 m LIMON, TALAMANCA P.N. Cordillera de Talamanca Cordillera de Talamanca. Shrub to 3 m, with white milk. Staminas yellow.
Michael Grayum 10324 Det. by: B. Hammel, VII 1996 Phenology: FL 17 March 1993 09:20N 83:13W 2250-2270 m LIMON, TALAMANCA P.N. Cordillera de Talamanca Cordillera de Talamanca. Shrub ca. 2.5 m tall in open "páramo" vegetation. Sap white. Midvein of lvs. yellowish above; lvs. whitish below. Fls. light green; anthers white. Prob- ably the male of MG 10323.
Barry Hammel 16609 Det. by: B. Hammel, XI 1987 Phenology: FR 15 November 1987 09:44N 83:49W 1300 m CARTAGO, CARTAGO Valle del Reventazón. Epiphyte in tree on slopes along small stream at edge of woods; leaves semi- glossy above, much paler and dull below, the resin lines small, inconspicuous dashes; resin greenish white, same color as lower leaf surface; petals cream. Flowers fragrant.
Gerardo Mora 394 Det. by: B. Hammel, XII 1995 Phenology: BF 1 October 1994 09:45N 83:47W 1150 m CARTAGO, PARAISO P.N. Tapantí Valle del Reventazón. Arbol de 12 m. Botones florales verde- tierno. Flores blancas. Mucho látex amarillo.
Barry Hammel 19812 Det. by: B. Hammel, VII 1996 Phenology: FR 10 May 1995 09:46N 83:59W 1900 m CARTAGO, EL GUARCO Cordillera de Talamanca. Arbusto de 4 m. Savia blanca hasta crema. Frutos verdes.
J.F. Morales 1982 Det. by: B. Hammel, XI 1993 Phenology: BF 6 November 1993 09:50N 84:07W 1900-2000 m SAN JOSE, ASERRI Cerros Escazú-La Carpintera. Arbol de 5 m. Botones florales verde claro. Tallo con secrecion lechosa.
Barry Hammel 19067 Det. by: B. Hammel, XI 1993 Phenology: FL 3 October 1993 09:55N 84:10W 1100-1700 m SAN JOSE, ESCAZU Cerros Escazú-La Carpintera. Epífita arborescente; botones florales verdes; savia blanca.
William Haber 11552 Det. by: B. Hammel, XII 1995 Phenology: FR 21 July 1993 10:18N 84:48W 1200-1300 m PUNTARENAS, PUNTARENAS Cordillera de Tilarán. Treelet, 3 m, rocky slope exposed to trade winds. Latex cream white. Fruit 2.5 m diameter x 3 cm long, 7-8 stigmas, style column 6 mm, yellow-green mature, axils bright yellow, seeds yellow green.
Gladys Rodríguez 132 Det. by: B. Hammel, VII 1994 Phenology: FR 23 March 1993 10:36N 84:59W 1000 m GUANACASTE, TILARAN Z.P. Tenorio Cordillera de Tilarán. Arbolito muy ramificado, creciendo en tacotal. Frutos verdes.
Ale Azofeifa 38 Det. by: B. Hammel, XII 1995 Phenology: FR 10 February 1995 10:55N 85:28W 1600 m GUANACASTE, LIBERIA P.N. Guanacaste Cordillera de Guanacaste. Arbusto de 3 m. Frutos verdes con la punta rojiza.
Roberto Espinoza 71 Det. by: B. Hammel, VII 1994 Phenology: FR 25 November 1990 10:55N 85:28W 1100 m GUANACASTE, LIBERIA P.N. Guanacaste Cordillera de Guanacaste. Epífita. Frutos verdes inmaduros. Látex amarillento.
Petrona Ríos 329 Det. by: B. Hammel, XII 1994 Phenology: FR 2 February 1991 11:02N 85:24W 700 m GUANACASTE, LA CRUZ P.N. Guanacaste Cordillera de Guanacaste. Epífita. Frutos inmaduros con savia amarilla.