Anthurium planadense Croat

Terrestrial; juvenile with petiole 20-30 cm long, 1-2 mm diam.; blade ovate-triangular to cordate, 15-20 cm long, 7-10 cm wide; adult with stems to ca. 60 cm long; internodes short (1-3 cm long), 2-3 cm diam., drying reddish brown; cataphylls to 10 cm long, persisting as coarse reticulum of fibers with a few longitudinal fragments of epidermis at upper nodes, longitudinally somewhat organized below, fibers reddish brown fresh, drying tan; petioles 70-80 cm long (averaging 76 cm), 4-6 mm diam., terete, sometimes obscurely and narrowly sulcate adaxially, almost matte, asperous, weakly striate; geniculum swollen, tinged purple, 2-3 cm long; blades ovate-cordate, acuminate at apex, cordate at base, 49-57 cm long, 24-26 cm wide (averaging 53 X 25 cm), 2-2.2 times longer than broad, .7-.75 times longer than the petioles, broadest at or near point of petiole attachment, subcoriaceous, dark green and matte above, moderately paler and semiglossy below, drying dark brown above, reddish brown; anterior lobe 34-38 cm long, the lateral margins almost straight; posterior lobes 15-19 cm long, 9.5-11.5 cm wide, directed inward and the lobes sometimes overlapping on dried specimens; sinus obovate, 14-18 cm deep, 5 cm wide; midrib acutely raised and purplish above, round-raised and paler below; basal veins 8-9 pair, the 1st (-2nd) pair free to the base, the remainder variously coalesced 9-11 cm, acutely raised below; posterior rib naked 6-10 cm, broadly curved; primary lateral veins 15-25 per side, departing midrib at ca. 60° angle, ascending to collective vein, deeply quilted-sunken above, prominently raised below; collective vein arising from near base, as prominent as primary lateral veins, 1-2 mm from margin; INFLORESCENCES erect-spreading; peduncle 22-27 cm long, 2-5 mm diam., drying reddish-brown; spathe lanceolate, 7-9 cm long, 2.0-2.7 cm wide, green, tinged maroon weakly within and on veins outside, hooding spadix, lanceolate, acuminate at apex; spadix maroon, cylindroid, matte, 7-9 cm long, 5-7 mm diam. Flowers 10-12 on the primary spiral, 2.0-2.3 mm long, 1.7-2.0 mm wide, pistils whitish, emergent; stamens exserted; pollen white.