Stenospermation angustifolium Hemsl.

Ortiz, Orlando Oriel, de Stapf, María Sánchez, Baldini, Riccardo Maria & Croat, Thomas Bernard, 2019, Synopsis of aroids (Alismatales, Araceae) from Cerro Pirre (Darién Province, Panama), Check List 15 (4), pp. 651-689 : 685

Stenospermation angustifolium Hemsl. ( Fig. 8D)

Material examined. Summit of Cerro Pirre, cloud forest; 07°55′21″N, 077°42′57″W; 1000–1400 m; 29 Dec. 1972; A. H. Gentry 6949 ( MO). Serranía Pirre, 1.5–2.5 mi. S on ridge from intersection with trail down to Rancho Frío, cloud forest; 07°57′N, 077°43′W; 900–1000 m; 11 Jul. 1977; R. L. Hartman 4501 ( MO, PMA). Parque Nacio- nal Darién, caminando entre Campamento Rancho Frío No. 2 hacia la cima de Cerro Pirre; 08°00′N, 077°45′W; 700–1000 m; 7 Feb. 1991; H. Herrera 856 ( MO). Ibid., Rancho Frío, cascada arriba; 08°00′58″ N, 077°43′24″ W; 164 m; 14 Apr. 2016; O. O. Ortiz 2567 ( PMA).

Identification. This species is characterized by having epiphytic habit, elongated and slender stems, slightly coriaceous and small blades; inflorescences with white spathes and uniform whitish spadices, with naked bisex- ual flowers. Stenospermation angustifolium is the only species of Cerro Pirre that has shortly stipitate whitish spadices (stipe of up to 2 mm long).

Distribution and ecology. Colombia, Costa Rica, Ecuador, Honduras, Nicaragua, Panama, and Peru. This

species of wide distribution ocurrs throughout the Cerro Pirre elevation gradient, between 90 and 1400 m.