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 37g . Geonoma maxima subsp. hexasticha (Spruce) Henderson , comb. & stat. nov. Basionym: Geonoma hexasticha Spruce (1871: 110) . Type: BRAZIL . Amazonas: near Gama’s sitio, São Gabriel, March 1852 , R. Spruce 29 ( holotype K!, isotypes NY!, P!). Geonoma negrensis Spruce (1871: 113) . Type: VENEZUELA . Amazonas : Río Negro, San Carlos, September 1853 , R. Spruce 70 ( holotype K!). Leaves regularly pinnate with 3–5-veined pinnae (except for basal and apical ones), not plicate; rachis 66.9(42.0–100.0) cm long; pinnae 20(15–25) per side of rachis; basal pinna 0.6(0.3–1.5) cm wide, forming an angle of 64(40–87)° with the rachis. Inflorescences rachillae 13(6–25). Distribution and habitat:— From 3°49’N– 0°70’S and 65°07’– 68°00’W in southern Venezuela and adjacent Colombia ( Guainia ) and Brazil (Amazonas) at 214(65–1000) m elevation in lowland rainforest usually near streams or rivers on flooded or non-flooded soils ( Fig. 26 ).