Philodendron wadedavisii Croat

Hemiepiphyte [description from dried material]. Internodes 1-2 cm long, 0.5-0.8 cm in diam., glossy, drying pale yellow-brown, closely ridged. Cataphylls 6-10 cm long, green, unribbed, persistent only at uppermost nodes, deciduous intact. Petioles 7-9 cm long (averaging 8 cm), brownish yellow, closely and irregularly ridged longitudinally. Blades narrowly elliptic to narrowly obovate-elliptic, 28-40.5 × 8.5-10 cm (averaging 33.8 × 9.17 cm), 3.7× longer than wide, narrowly long-acuminate at apex, acute to rounded at base, subcoriaceous, drying dark yellowish brown above, glossy both above and below; major veins drying paler than the upper surface, darker than the lower surface; midrib drying flat and concolourous to slightly darker above, bluntly angular and paler, yellowish brown, drying finely ridged below; primary lateral veins 8-9 pairs per side, flat and concolourous above, convex and lighter below, departing midrib at 35-50° angle; interprimary veins moderately few in number but moderately distinct when present. Inflorescence 1-2 per axil; peduncle 3.5-4.5 cm long, drying 0.2-0.3 cm wide midway. Spathe 6.3-6.6 cm long, 1-1.5 cm in diam. at anthesis, flattening to 3.5 cm wide at tube, medium green outside, paler green within, coarsely marked with resin canals on inner surface, these extending to 1/3 up the blade, about 2/3 of the entire spathe. Spadix 5.3 cm long; pistillate portion 2.4 cm long, 0.6-0.7 cm in diam.; staminate portion 2.8 cm long; sterile staminate portion 0.5 cm long, 0.4 cm in diam., white; fertile staminate portion 0.5 cm wide. Stigmas button-shaped with 5-6 holes, subtended by a broad pale apron, about twice as broad as stigma, 0.5 mm wide, pistils widely spaced, c. 3 mm long; ovary 5-6-locular; ovules 1 per locule.