Anthurium chiapasense subsp. chiapasense

Epiphyte; stems 2-4 cm long, 2.5 cm diam.; internodes and leaf scars obscured by cataphylls; roots moderately thick, green, descending; cataphylls subcoriaceous, 3-6 cm long, acute at apex (apiculate to 2 mm), drying brown (B & K Yellow 3/10), weathering to reticulate fibers and persisting. LEAVES erect-spreading; petioles 10-51 cm long, 3-6 mm diam., terete; geniculum 1.7-2 cm long, sometimes shallowly sulcate; blades moderately thick, narrowly triangular, long acuminate at apex, broadly lobed at base, 13-42 cm long, 5.5-25 cm wide, broadest at base; anterior lobe 11.5-36 cm long, the margins ± straight; posterior lobes 2.5-10.5 cm long; sinus arcuate, round at apex; both surfaces matte, lower surface densely glandular-punctate; midrib acutely raised at base above, flat at middle, sunken at apex, acutely raised throughout below; basal veins 3-4 pairs, the third and fourth coalesced 1.5-2 cm, flat to weakly sunken above, raised below; the posterior rib naked, the outer margin turned up; primary lateral veins 2-3 per side, departing midrib at 30° angle, weakly sunken, nearly obscure above, prominulous below, ± straight to collective vein, lesser veins obscure; collective vein arising from the uppermost basal vein, 0.7-1.5 mm from margin, sunken above, raised below. INFLORESCENCE erect-spreading; as long as or longer than leaves; petiole 30-57 cm long, 2.5-4 cm diam., terete; spathe green, tinged with violet-purple, lanceolate; 4.5-7 cm long, 1-1.8 cm wide, cuspidate-acuminate at apex, rounded at base, broadest just above base, inserted at 50° angle on peduncle; spadix deep purple (B & K Red-purple 2/2.5), 7.4-10.5 cm long, 5.5-8 mm diam. at base, 3-4 mm diam. at apex, the flowers square to sub-4-lobed, 2.3-2.5 mm in both directions, the sides straight to jaggedly sigmoid; 4-7 flowers visible in the principal spiral, 7-8 flowers visible in the alternate spiral; tepals matte to weakly glossy, obscurely punctate, minutely papillate; lateral tepals 1.2-1.5 mm wide, the inner margins broadly rounded; pistils raised, not emergent until just before stamens emerge, green tinged with purple, weakly papillate; stigma linear, ca. 0.3 mm long, scarcely distinguishable; stamens emerging from base, lateral stamens emerging to midway, before alternates emerge at base; anthers yellow, 0.5 mm long, 0.6 mm wide, held just above tepals; thecae oblong-elliptic, slightly divaricate; pollen yellow, fading cream. INFRUCTESCENCE not known.