Philodendron ichthyoderma Croat & Grayum

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 : 678-679

Philodendron ichthyoderma Croat & Grayum

Material examined. Middle slopes on W side of Cerro Pirre; 07°57′N, 077°46′W; 550–760 m; 28 Jun. 1988; T. B. Croat 68868 ( MO). Vicinity Cerro Pirre, 17 km S of El Real, along trail from base camp, along Río Perisenico; 08°01′N, 077°44′W; 100 m; 28 Jul. 1994; T. B. Croat 77181 ( MO). Near airstrip at Cana, base of Cerro Pirre; 07°45′N, 077°41′W; 500 m; 22 Sept. 1982; C. Hamilton 1450 ( MO). North slopes of Cerro Pirre, lower montane rain forest (cloud forest); 07°54′N, 077°42′W; 700–950 m; 7 Apr 1975; S. Mori 5497 ( MO). Parque Nacio- nal Darién, Cerro Pirre, Rancho Frío, cascada arriba; 08°00′58″N, 077°43′24″W; 164 m; 14 Apr. 2016; O. O. Ortiz 2568 ( PMA). Ibid.; O. O. Ortiz 2735 ( PMA).

Identification. Philodendron ichthyoderma is recognized by its thick and scaly stems, large blades, strongly inequilateral at the base, and numerous primary lateral veins (15 or more per side). In the field, this species can be confused with P. inaequilaterum Liemb. , which differs in lacking scaly internodes and petioles.

Distribution and ecology. Colombia, Ecuador, and Panama. In the study area, P. ichthyoderma occurrs usually in semideciduous and evergreen forests, between 50 and 800 m.