Anthurium vaupesianum Croat

Epiphytic; stem to 9 cm long, 1-2 cm diam.; roots dense, ascending, fuzzy, soon glabrous, 3-4 mm diam.; cataphylls subcoriaceous, lanceolate, 3- 5 cm long, acuminate at apex, drying dark reddish brown, semi-intact, persisting briefly. LEAVES erect-spreading; petioles 4-9 cm long, 3-7 mm diam., D-shaped, flattened and conspicuously and obtusely ribbed adaxially, rounded to weakly angulate or weakly 3-ribbed abaxially; geniculum thicker than petiole, 0.5-1 cm long; sheath 3-7 cm long; blades coriaceous to subcoriaceous, oblanceolate-obovate, acute at apex, narrowly attenuate, ending narrowly acute to obtuse at base, 20-62 cm long, 9-26 cm wide, broadest above the middle, the margins usually flat, sometimes weakly and broadly undulate; upper surface semiglossy, medium green, lower surface weakly glossy, paler; both surfaces drying grayish to grayish brown; midrib convexly raised at base, becoming sharply raised (knifelike) toward the apex above, acutely raised at base, becoming convex toward the apex below; primary lateral veins 6-12 per side, departing midrib at 30-50º angle, straight to arcuate-ascending to the margin, raised in shallow grooves above; tertiary veins conspicuously sunken above, conspicuously raised below; collective vein arising from near the apex or absent, sunken above, raised below, 6- 12 mm from margin. INFLORESCENCES erect to pendent, ± equaling leaves; peduncle (16)36-70 cm long, (1)3-4 mm diam., (2.7)4-7.7 x as long as petiole, terete; spathe spreading to reflexed, subcoriaceous, green to brownish green, sometimes mottled purple, oblong- linear, 9-20 cm long, 0.6-1.5 cm wide, inserted at 40º angle on peduncle, acute at apex, attenuate at base; spadix brown to reddish to greenish or gray-brown (once reported as white), long-tapered, sessile or stipitate to 3.5 cm, somewhat curved, 20-38 cm long, drying 3-4 mm diam. midway, 2 mm diam. near apex; flowers rhombic, 1.4-1.8 mm long, 1.2-1.4 mm wide, the sides straight to smoothly or jaggedly sigmoid; 3-5 flowers visible in principal spiral, 3 in alternate spiral; tepals semiglossy, minutely papillate; lateral tepals 0.7-0.9 mm wide, the inner margins straight to rounded, the outer margins 2-sided; anthers 0.4 mm in both directions, inclined over and obscuring the pistil; thecae ellipsoid, slightly divaricate. INFRUCTESCENCE with spathe persisting ± intact; spadix 0.9 cm diam.; berries violet.