Philodendron oligospermum Engl.

Epiphytic or hemiepiphytic vine; internodes dark green, becoming gray, weakly glossy to semiglossy, 2-15 cm long, 1.5-1.8 cm diam., drying with a thin, loose, tan epidermal layer; eataphylls green, tinged reddish, moderately thin, unribbed to bluntly I-ribbed, to 5 cm long, drying red-brown, deciduous; petioles 5-12 cm long (averaging 8.9 cm), 4-6 mm diam. at middle, erect-spreading, obtusely much flattened adaxially; blades ovate, ovate-elliptic, oblong-elliptic, or oblong, acuminate at apex, acute, obtuse, broadly rounded, tmncate, or even weakly cOl·date at base, 19-39 cm long, 6--15 cm wide (averaging 27.9 X 10 cm), 2.6-3.0 time longer than broad, 3.2-4.3 times longer than the petioles, surfaces semiglossy, moderately bicolorous, subcoriaceous; anterior lobes 16-35 cm long, posterior lobes not equal, to 3.5 cm long, 4-5 cm wide; midrib flat to obtusely and weakly sunken and scarcely to slightly paler above, narrowly rounded to thicker than broad and darker below; primary lateral veins 6--8 per side, weakly and narrowly sunken above, weakly convex and darker below; minor veins obscurely visible; INFLORESCENCES to 5 per axil; peduncle 3-8.5 cm long, 1-2 mm diam., green; spathe 4-6 cm long; spathe tube light green to whitish inside, medium green outside; spathe blade white inside, tinged red near apex (post-anthesis), pale green to white outside; spadix 3-4 cm long, cylindroid; pistillate portion medium green, 2.0-2.5 cm long, 3-5 mm diam.; staminate portion white or pale reddish to pink at anthesis, 2.5-3.0 cm long, 4-5 mm diam.; pistils 2.8 mm long, 1.8-2.4 mm diam.; style about as wide as the pistil, quadrangular to rounded or pentagonal, the margins thicker and raised, the center sunken with the medial stigma button-shaped, 0.4 mm diam.; ovules 1 per locule with basal placentation; seeds 1.9-2 mm long, 0.8 mm diam., appearing to be attached to the lower surface of the style, terete in cross-section, light brown, moderately smooth.