Anthurium stephanii Croat & Acebey

Hemiepiphytic vine; internodes very short near the apex, drying less than 1 cm diam., dark reddish brown; cataphylls 5-10 cm long, slender, persistent along with the petiole bases. LEAVES: Petioles terete, 16.5 - 24 cm long, sheathed 35% - 40% their length, drying dark yellow-brown; geniculum 1.5-2.0 cm long, darker, terete. Leaf blades oblong-lanceolate to oblanceolate, 28-38.5 x 7.2-9.1 cm wide, 3.8-4.6 times longer than wide, broadest at middle or above middle, narrowly acuminate at apex, acute at base, semi-glossy on both surfaces, dark green above, slightly paler below, drying medium to dark green above, reddish brown to yellow-brown above, narrowly raised and concolorous to weakly paler above, drying ± acute toward the middle of the blade above, narrowly convex and darker than surface below; primary lateral veins 13 to 15 pairs, weak and scarcely visible on both surfaces; collective veins arising from the base, 7-10 mm from margin, scarcely raised and concolorous on upper surface, weakly raised on lower surface, weakly loop-connecting the primary lateral veins; tertiary veins obscure. INFLORESCENCE erect-spreading; peduncle 20 cm long, drying 2 mm diam.; spathe lanceolate, green, 7.5-12 x 9-12 mm; spadix 10.3-12 cm long, drying 3 mm diam., stipitate 6 mm. Flowers 2.3-3.7 mm long, 3 flowers visible per spiral; lateral tepals 1.7 mm wide, inner margin rounded, outer margin 2-sided. INFRUCTESCENCE: Berries unknown.