67e. Geonoma undata subsp. pulcherrima (Burret) Henderson, comb. & stat. nov.

Basionym: Geonoma pulcherrima Burret (1930a: 195) . Type: ECUADOR. Morona-Santiago: confluence of Río Bomboiza and Río Zamora, 700–800 m, no date, F. Lehmann 5289 (holotype B, destroyed, isotypes F!, GH!, K!).

Leaves veins raised and rectangular in cross-section adaxially; basal pinna 0.7(0.3–1.0) cm wide; apical pinna 0.8(0.5–1.0) cm wide. Inflorescences prophyll margins without irregular, spine-like projections; flower pits usually spirally arranged, not distantly spaced.

Distribution:— From 3°30’– 4°18’S and 78°30’– 78°41’W on eastern Andean slopes in southeastern Ecuador at 923(750–1130) m elevation along river banks in areas subject to flooding (Fig. 43). Plants are reported to be rheophytes.