A revision of Geonoma (Arecaceae) Author Henderson, Andrew text Phytotaxa 2011 2011-02-18 17 1 271 journal article 24911 10.11646/phytotaxa.17.1 65962ba7-eec1-40e7-aed6-cef94e99ca39 1179-3163 3538362 37i. Geonoma maxima subsp. sigmoidea Henderson , subsp. nov. (Appendix IV, Plate 51) A subspeciebus aliis angulo pinnarum basalibus amplus differt. Type: COLOMBIA . Amazonas: corregimiento de Araracuara, carretera a Puerto Arturo, sitio “Guácheros”, ca. 360 m , 18 September 1987 , G. Galeano & J. Huitoto 1279 ( holotype COL!, isotype NY!). Leaves regularly pinnate with 3–5-veined pinnae (except for basal and apical ones), not plicate; rachis 34.1(27.5–48.5) cm long; pinnae 16(10–20) per side of rachis; basal pinna 0.3(0.2–0.6) cm wide, forming an angle of 70(50–87)° with the rachis. Inflorescences rachillae 28(16–42). Distribution and habitat:— From 0°04’N– 1°18’S and 72°05’– 72°52’W in the western Amazon region in Colombia (Amazonas, Caquetá ) at 270(200–360) m elevation in lowland rainforest ( Fig. 27 ). One specimen ( Galeano 2080 ) has larger leaves and exceptionally large fruits ( 13.3 cm long and 11.5 cm diameter), and may be a hybrid with a morphotype of subsp. chelidonura .