Anthurium horridum

Epiphytic; stem woody, erect; internodes short; cataphylls persistent, intact, coriaceous. LEAVES with petioles 57.6 cm long, subterete, weakly sulcate, drying markedly 5-ribbed, matte; geniculum 4 cm long, darker that petiole; blades ovate-sagittate, 46.9 cm long, 33.8 cm wide, widest at petiolar plexus, 1.4 times longer than broad, 0.8 times as long as petiole, abruptly acuminate with bristle (acumen 1.5 cm long), coriaceous, drying gray-brown above and yellowish gray-brown below; upper surface areolate-ridged, somewhat sunken sparsely pale short-lineate; lower surface obscurely and finely punctate, densely dark granular; anterior lobe 30.2 cm long, margins broadly convex; posterior lobes 18.5 cm long, 14 cm wide, turned inward; midrib narrowly rounded and concolorous above, acutely raised and dark yellow-brown below with narrow medial rib; primary lateral veins 5 - 6 pairs, arising at a 28° angle, slightly raised above, acutely raised below; tertiary veins not prominent; collective veins arising from the first basal vein, 0.7 - 1.0 cm from margin with lower basal veins margining out; antimarginal vein present; basal veins 8 pairs, 2 pair free to the base, 3rd pair fused 2.5 cm, 4th pair fused 4.2 cm, 5th - 6thfused 5.7 cm; posterior rib 5.7 cm long, naked 3.5 cm long; sinus spathulate, 14 cm deep, 5.8 cm wide. INFRUCTESCENCE erect; peduncle short, probably to no more than 3 cm long; spathe erect, boat-shaped, somewhat coriaceous, green, drying dark brown; spadix sessile, cylindroid, weakly curved, coarsely prickly with the narrowly exserted pistils, drying dark brown; flowers 13 - 15 per spiral, 3.5 mm long, 3.5 mm wide; tepals drying granular-crustose and grey-brown, surfaces dark brown and semiglossy; lateral tepals 1.5 mm wide, narrowly rounded on inside margin, outer margin 2-sided, erect and flaring apically post-anthesis; pistils 7 - 9mm long, early emergent, oblong-tapered, style slender, topped with round stigma, 0.5 - 0.6 mm diam., pistils sometimes drying recurved, dry with blunt ribs around circumference.