Anthurium longigeniculatum Engl.

Epiphytic or terrestrial; internodes smooth, semiglossy, 6-19 cm long, 3.5-5 mm diam., reddish brown; aerial roots originating from nodes, 1-4 per node, not very conspicuous, drying gray-black, 5-8 cm long, weakly branched or not at all branched; cataphylls subcoriaceous, 2.5-3.5 cm long, red-brown, drying reddish brown, persisting semi-intact at upper nodes, as fibers at lower nodes; petioles 10-20 cm long (averaging 15.7 cm), 2-3 mm diam., terete, tinged reddish, semiglossy; geniculum 2-2.5 cm long, drying black; blades ovate to ovate-elliptic, narrowly long-acuminate to almost aristate at apex, rounded at base, 9-15 (-21.5) cm long, 4-7 (-12.8) cm wide (averaging 13.3 x 6 cm), 2.0-2.5 times longer than broad, .7-1.1 times as long as the petioles, broadest below middle, subcoriaceous to moderately coriaceous; semiglossy to glossy, conspicuously bicolorous, dark green and semiglossy above, moderately paler and semiglossy below, drying medium greenish brown to yellowish brown above and smooth to usually minutely granular above, grayish yellow-green and faintly dotted below with pale round moderately obscure punctations below; midrib slightly paler, acutely raised, often in valleys above, acute and paler below; primary lateral veins 5-6 per side, departing midrib at 45°--60° angles, ascending to collective vein, etched and weakly quilted above, weakly pleated-raised below, as conspicuous as the collective vein; tertiary veins obscure; collective veins arising from near base, 4-7 mm from margin. INFLORESCENCES erect; peduncle to ca. 12 cm long, 1-1.5 mm diam.; spathe erect-spreading, reflexed, tinged purple; spadix yellowish green, moderately glossy, cylindroid to slightly tapered, ca. 2.5 cm long, 3 mm diam. at base, 2 mm diam. at apex; lower pistils weakly emergent.