Araceae
Anthurium huanucense Engl.
SUMMARY
Description based on dry material. Epiphyte; roots 0.1-0.5 cm wide, whitish to brown, spreading to descending; stem subterete, drying grayish, covered by the cataphylls; internodes short, 0.4-0.6 cm long, 0.6-1 cm diam.; cataphylls (1-)5.8-7.1 cm long, 2-ribbed, triangular lanceolate, acute at apex, reddish brown to grayish brown, membranous. LEAVES erect to spreading; petioles 4.1-10.4 cm long, 0.1-0.3 cm wide, U-shaped, narrowly sulcate, green; sheath 1.7-3.8 cm long; geniculum 0.4-0.9 cm long; blades subcoriaceous, 14.7-39.6 cm long, 2.6-7.9 cm wide, wider above the middle, elliptic-oblanceolate to narrowly elliptic; acute at apex, acute to shortly attenuate at base; almost concolorous on both surfaces, lightly darker above, adaxially semiglossy, matte below; midrib narrowly convex above, convex below; primary lateral veins numerous, (9-)18-24 per side, distinct from the interprimary veins, straight to the collective veins, departing midrib at 35-40(-70°) angles; collective veins arising at base, 0.1-0.5 cm from the margins. INFLORESCENCE erect to spreading; peduncle 24.8-42.8 cm long, (0.1-)0.3--0.4 wide, green, terete, 4.8-6.9 times longer than the petioles; spathe subcoriaceous, green, persisting on fruit, reflexed, (1.6-)4.8-5.1 cm long, (0.4-)0.5-0.7 cm wide, linear-oblong, acute to apex, rounded to base; spadix cylindric, sessile, 1.1-10.1 cm long, 0.4-0.5 cm wide, green to reddish; flowers rhombic to 4-lobed, sides sigmoid, 3 x 3 mm; 2-3 flowers visible in the principal spiral, 3-5 flowers visible in the alternate spiral; tepals 3-sided, lateral tepals with inner margins straight to slightly convex; pistils ovate-elliptic; stamens 0.1 cm long; filaments flattened; anthers surrounding the stigmas at anthesis; thecae not divaricate. INFRUCTESCENCE erect; spadix 15.1 cm long, 0.5 cm wide, green; berries spherical, 3 x 3 mm; seeds 2, ovoid-elliptic, 0.2 x 0.1 cm.