Philodendron purpureoviride Engl.

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 : 682

Philodendron purpureoviride Engl.

Material examined. Cerro Pirre, vicinity of station along Río Perisenico; 08°01′N, 077°44′W; 110 m; 26 Jul. 1994; T. B. Croat 77117 ( MO). Ibid., Rancho Frío, orillas del río Perresenico; 08°01′11″N, 077°43′51″W; 110 m; 13 Apr. 2016; O. O. Ortiz 2707 ( PMA).

Identification. This species is recognized by its nomadic vine life form, yellowish and conspicuously exfoliating (often cracked) stem epidermis (when dry), slightly flat- tened petioles, narrowly ovate and cordate blades that dry greenish yellow, two to three pairs of basal veins, solitary inflorescences with violet-purple spathe tubes on both surfaces. In the study area, this species is similar to P. platypetiolatum Madison , which differs in having dorsiventral flattened petioles and blades with more pairs of basal veins (seven to 10 basal veins per side).

Distribution and ecology. Colombia, Costa Rica, Ecua-

dor and Panama. In the study area, this species has only been reported in semideciduous lowland forests, near 100 m. It is very common in semi-open areas along rivers and streams.