Araceae
Anthurium payaminoense Croat & Lingán
SUMMARY
Description based on dried material. Epiphyte; roots 1 mm diam., whitish to pale brown; stem terete; internodes 0.5-3.2 cm long, 0.4-0.7 cm diam; cataphylls 0.7-4 (9) cm long, lanceolate, membranaceous, persisting reddish brown to dark brown. LEAVES erect to spreading; petioles 3.9-13.6 cm long, 0.2-0.3 cm diam., U-shaped, shallowly and acutely sulcate above, 0-2- ribbed below, green; sheath 1.4-3.2 (5.1) cm long; geniculum 1.2-2.7 cm long; blades papiraceous, 16.5-30.8 cm long, 5.5-11 cm wide, oblong-elliptic to oblanceolate, abruptly acuminate at apex, drying dark olive green above, blackish below; midrib conspicuously raised in both surfaces, more conspicuously above; primary lateral veins (5)7-9 per side, conspicuously raised below, straight, departing at 30-45° (50°) from the midrib; collective veins arising from the base, (0.2) 0.7-1.5 cm from the margin. INFLORESCENCE erect to spreading; peduncle 10.9-32.1 cm long, 0.1-0.3 cm diam., markedly 3-4-sided, green, 2.3-2.8 times longer than the petiole; spathe papiraceous, green, persistent, erect to spreading, (3.4) 6.5-13 cm long, 0.5-1.6 cm wide, narrowly oblong, conspicuously acuminate at apex, the margins joining at ca. 90° angle; spadix slightly tapered at apex, (0.2) 3.7-14.4 cm long, 0.2-0.4 cm wide near to apex, 0.2-0.6 mm wide near to base, green; stipe greenish, (0.4) 0.6-1.4 (3.2) cm long; flowers square, margins slightly sigmoid, 2 × 2 mm; 3-4 flowers visible in the principal spiral, 5-6 flowers visible in the alternate spiral; tepals with the inner margins straight to convex; pistils with stigmas elliptic, not protruding; stamens ca. 1 mm long, flattened; thecae not divaricated. INFRUCTESCENCE erect to spreading, green; berries ca. 3 mm long.