Anthurium triphyllum (Willd. ex Schult.) Brongn. ex Schott

Epiphytic (occasionally hemiepiphytic) or terrestrial; stems to 1 m long, 1.5-3 cm diam.; internodes elongate to 10 cm long, .6-4 cm diam., medium to dark green, matte to semiglossy; cataphylls 18-30 cm long, 6-10 mm diam., soft, pale to dark green, coriaceous, marcescent, matte-subvelvety, unribbed or sharply I-ribbed, mostly deciduous, only pale fibers persisting semi-intact at nodes or as few, pale, fine fibers at base. LEAVES with petioles 27-83 cm long (averaging 53 cm), finely ribbed, subterete to terete, obtusely and narrowly sulcate, slightly thicker than broad, medium to dark green, purplish violet tinged, matte to weakly glossy to semiglossy, weakly flattened at times adaxially, 1-2 faint ribs abaxially, obscurely sulcate on geniculum; geniculum pale green, very swollen; blades trisect with medial lobes slightly longer and wider than lateral lobes, 15-56 cm long, 15-65.9 cm wide (averaging 35.8 x 42 cm), approximately .85 times as long as wide, .5-1.0 times longer than petiole but averaging .7 times as long as petiole, subcoriaceous, dark green and semiglossy to glossy (occasionally matte) above, moderately paler, weakly to moderately bicolorous and semiglossy below; medial lobes ovate-elliptic, acute to cuspidate at apex, acute at base, broadest at the middle, 15-56 cm long, 5.2-23.5 cm wide (averaging 36 x 13 cm); lateral lobes ovate-elliptic falcate, ranging from bluntly acute to occasionally cuspidate at apex, acute at base, broadest at the middle, nearly equal, 16-46 cm long, 5.2-19 cm wide (averaging 32 x 11 cm); midrib weakly sunken and concolorous above, raised convexly and darker below; primary lateral veins 7-10 per side, on medial lobe departing midrib at approx. 45° angle, weakly sunken and concolorous above, bluntly raised and darker below, on lateral lobes first 2-3 veins extend to margin, remaining veins extend to collective vein which approaches margin as it approaches apex; interprimary veins etched and concolorous above, weakly raised below; tertiary veins partly conspicuous above, weakly raised below; collective vein arises in bottom third of lobe and approaches the margin as it approaches the apex of the lobe. INFLORESCENCE erect; peduncle 8.5-41 cm long (averaging 23.9 cm), half as long as petiole, terete, medium green (sometimes purplish violet), matte to matte-subglistening, weakly sulcate adaxially toward apex; spathe 4.7-17.5 cm long (averaging 11.4 cm), .7-4 cm wide (averaging 2.0 cm), medium green, turning brownish in fruit, brittle, cylindroid, matte to weakly glossy on both surfaces, reflexed-spreading and twisted, incurled along margins; spadix 4.5-26.5 cm long (averaging 14.4 cm), .4-2 cm wide (averaging 1 cm), greenish-white, pale yellow-green, pale to dark green, dark gray-green or olive-green, matte to semiglossy, sometimes yellow-green to green toward apex and creamy white toward base. Flowers 6-8 visible per spiral, 2.5-3.0 mm long, 2.0-2.3 mm wide, lateral tepals 1.2-1.4 mm wide, drying brown, minutely granular outer margin 2-3 sided, inner margin rounded. INFRUCTESCENCE with tepals brown and semiglossy; pistils green, promptly emergent; stamens prominently exerted, exerted at anthesis, whitish; pollen pale yellow; fruits medium green, immature, early protruding, acute at apex.