67g. Geonoma undata subsp. stenothyrsa (Burret) Henderson, comb. & stat. nov.

Basionym: Geonoma stenothyrsa Burret (1930a: 197) . Type: COLOMBIA. Antioquia: San Carlos, 1650–2650 m, 28 January 1880, W. Kalbreyer 1372 (holotype B, destroyed). Neotype (designated by Bernal et al. 1989): COLOMBIA. Antioquia: carretera Granada-San Luis, 5.5 km adelante de El Chocó, 1750 m, 20–21 September 1987, R. Bernal & L. Tobón 1387 (neotype COL!, isoneotypes AAU!, BH!, NY!).

Geonoma euterpoidea Burret (1930a: 196) . Type: COLOMBIA. Antioquia: Alto Guatapé, 1950 m, 26 February 1880, W. Kalbreyer 1477 (holotype B, destroyed). Neotype (designated by Bernal et al. 1989): COLOMBIA. Antioquia: Mun. Guatapé, vereda Santa Rita, ca. 1900 m, 20 May 1980, R. Bernal & G. Galeano 190 (neotype COL!, isoneotype NY!).

Leaves veins raised and rectangular in cross-section adaxially; basal pinna 1.8(0.7–3.8) cm wide; apical pinna 4.8(0.1–8.5) cm wide. Inflorescences prophyll margins with irregular, spine-like projections; flower pits usually spirally arranged, not distantly spaced.

Distribution and habitat:— From 6°01’– 6°54’N and 75°01’– 75°40’W in the Central Cordillera in Colombia (Antioquia) at 1675(1500–1900) m in montane rainforest (Fig. 43).

One specimen (Bernal 190, neotype of G. euterpoidea) has leaves with more pinnae than the others (23 versus 8–13).