67i. Geonoma undata subsp. tumucensis Henderson, subsp. nov. (Appendix IV, Plate 68)

A subspeciebus aliis foveis decussatis differt.

Type: SURINAME. Inselberg Talouakem, Massif des Tumuc-Humac, 2°29’N, 54°45’W, 620 m, 16 August 1993, J.-J. de Granville, P. Acevedo, A. Boyer & L. Hollenberg 12322 (holotype NY!, isotype US!).

Leaves veins raised and rectangular in cross-section adaxially; basal pinna 3.0 cm wide; apical pinna no data. Inflorescences prophyll margins with irregular, spine-like projections; flower pits decussately arranged, not closely spaced.

Distribution and habitat:— From 2°15’– 2°29’N and 54°25’– 54°45’W on the Tumuc-Humac mountains in French Guiana and Suriname at 610(600–620) m in lowland rainforest (Fig. 44).