Geonoma undata subsp. stenothyrsa (Burret) Henderson

Henderson, Andrew, 2011, A revision of Geonoma (Arecaceae), Phytotaxa 17, pp. 1-271 : 160

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).

Figures

FIGURE 43. Distribution maps of Geonoma undata subsp. pulcherrima, G. undata subsp. skovii, G. undata subsp. stenothyrsa, and G. undata subsp. tacarcunensis.