Anthurium acutangulum

Epiphyte or rarely terrestrial; roots numerous; cataphylls subcoriaceous, 2.5-5(11) cm long, acuminate (the acumen apiculate), drying tan to light brown, persisting as linear fibers. LEAVES erect to spreading; petioles narrowly sulcate, rounded to sometimes 1-ribbed abaxially, 3-22 cm long, 4-7 mm diam.; geniculum 1-1.5 cm long; blades elliptic to narrowly obovate, subcoriaceous, short-acuminate at apex, acute to obtuse at base, 15-34 cm long, 5-14 cm wide, broadest at middle or slightly above, both surfaces semiglossy, the lower surface punctate; midrib convexly raised above and below; primary lateral veins 8-10 per side, departing midrib at 55°-60° angle, ± straight to collective vein, loop-connected from base; collective vein rising from base, sunken on upper surface, 3-8 mm from margin. INFLORESCENCE spreading to pendent, equal to or longer than leaves; peduncle 12-61 cm long, 4-4.5 mm diam., terete or strongly ribbed abaxially, sometimes 3-ribbed adaxially, rarely 4-6 ribbed, the ribs irregularly spaced, tinged with red-violet near base, much longer than petioles; spathe green, tinged with red-violet (B & K Yellow-green 8/10), oblanceolate, 7-11.5 cm long, 1.2-1.5 cm wide, broadest at base, inserted at 40° angle on peduncle, sometimes slightly twisted; stipe 6-7 mm long in front, 2-3 mm long in back; spadix yellow-green (B & K Yellow-green 6/7.5), 8.5-21 cm long, 4-6 mm diam. at base, 3-4 mm diam. at apex; flowers rhombic, 4.2-6 mm long, 2.5-3.5 mm wide, the sides ± straight; ca. 5 flowers visible in the principal spiral and ca. 4-6 flowers visible in the alternate spiral; tepals glossy, weakly punctate, papillate; lateral tepals 3-3.3 mm wide, the inner margins straight and flat; pistils emergent, green; stigma brushlike with droplets, dry and brown as stamens emerge; stamens emerging rapidly from base or middle, the first lateral stamens emerging at apex as third and fourth emerge at base, exserted on transparent filaments, 0.3-0.5 mm long, 0.7-1 mm wide, retracting and holding anthers at sides of pistil, not contiguous; anthers creamy white, 0.5 mm long, 0.7-0.8 mm wide; thecae ellipsoid, divaricate; pollen white, abundant. INFRUCTESCENCE pendent; berries pale orange, ± obovoid, ca. 5 mm long.