Geonoma maxima subsp. compta (Trail) Henderson, 2011

Henderson, Andrew, 2011, A revision of Geonoma (Arecaceae), Phytotaxa 17, pp. 1-271 : 100

37e. Geonoma maxima subsp. compta (Trail) Henderson , comb. & stat. nov.

Basionym: Geonoma spruceana subsp. intermedia var. compta Trail (1876: 329) . Type: BRAZIL. Amazonas: Barcellos, 30 June 1874, J. Trail 997/LXXXIV (holotype K!).

Geonoma spruceana subsp. intermedia var. intermedia Trail (1876: 329) . Type: BRAZIL. Amazonas: Lago Cerrado, Rio Juruá, 30 October 1874, J. Trail 989/CXLVII (holotype K!).

Leaves regularly pinnate with 1-veined pinnae, not plicate; rachis 44.5(11.0–87.0) cm long; pinnae 18(6–29) per side of rachis; basal pinna 0.3(0.1–0.5) cm wide, forming an angle of 58(38–77)° with the rachis. Inflorescences rachillae 19(4–40).

Distribution and habitat:— From 1°11’N– 11°10’S and 56°00’– 77°40’W in the central and western Amazon region in Colombia, Brazil, Peru, and Bolivia at 193(122–400) m elevation in lowland rainforest ( Fig. 26 ).

Some specimens from the Colombian Amazon (e.g., Galeano 1973, García-Barriga 15005, Zarucchi 1712) have wider pinnae than the others, more like those of subsp. hexasticha . One specimen from Amazonas in Peru (Díaz 7131) appears intermediate between subsp. compta and subsp. camptoneura .

Figures

FIGURE 26. Distribution maps of Geonoma maxima subsp. compta, G. maxima subsp. dispersa, G. maxima subsp. hexasticha, and G. maxima subsp. multiramosa.