Anthurium caucavallense Croat

Epiphytic or terrestrial; stem to 20 cm long, 1- 4 cm diam.; roots dense, mostly descending, ascending at uppermost nodes, pale green, densely pubescent when fresh, moderately thick, tapered, to 5 mm diam.; cataphylls coriaceous to subcoriaceous, lanceolate and hook-shaped, 7-10 cm long, acuminate at apex, olive-green turning reddish purple, heavily short lineate throughout, drying brown, persisting as a reticulum of fibers. LEAVES spreading; petioles (9)15-34 cm long, 4-10 mm diam., erect to spreading, ± D-shaped, flattened to weakly sulcate adaxially, the margins raised, (1)3-5-ribbed abaxially, the surface pale-speckled; geniculum paler than petiole, becoming fissured transversely with age, 1-2.5 cm long; blades subcoriaceous, oblanceolate to ± elliptic, acute to acuminate at apex (the acumen apiculate), narrowly acute to subtruncate at base, (25)50-90 cm long, (6)l0-30 cm wide, broadest above the middle, the margins undulate; upper surface glossy to semiglossy, medium green, lower surface semiglossy to matte, sometimes weakly to conspicuously glaucous, paler; midrib flat at base, becoming acutely raised toward the apex above, higher than broad at base below with 1-2 blunt ridges, becoming convexly raised toward the apex; primary lateral veins (9)ll-20 per side, departing midrib at (45)70-90° angle, ± straight, convexly raised above, more prominently so below; interprimary veins few, almost as conspicuous as primary lateral veins; tertiary veins flat to sunken above, weakly raised below; collective vein arising from near the apex, occasionally in the lower third or near the base, flat to scarcely sunken above, weakly raised below, 3-5 mm from margin. INFLORESCENCES erect to spreading or pendent; peduncle 23-53(83) cm long, 4-6 mm diam., 1-2(5) x as long as petiole, green often tinged with maroon, terete; spathe spreading to reflexed, subcoriaceous, olive-green tinged with maroon, oblong-lanceolate, (8)l0-26 cm long, (1)1.5-2 cm wide, acuminate at apex (the acumen 5-10 mm long), acute to obtuse at base; spadix violet-purple or green tinged with gray-purple, tapered, sessile or stipitate to 7 mm long in back, (3.7)8-24 cm long, 5-10 mm diam. near base, 3-5 mm diam. Near apex; flowers square to 4-lobed, 2-2.7 mm in both directions, the sides straight to jaggedly sigmoid; 5-8 flowers visible in principal spiral, 13-14 in alternate spiral; tepals matte, conspicuously papillate and with droplets; lateral tepals 0.7-1.3 mm wide, the inner margins broadly convex, the outer margins 2-3-sided; pistils emergent at anthesis, densely papillate, green; stigma slitlike to ellipsoid, 0.3-0.4 mm long; stamens emerging in a regular sequence from the base, the laterals preceding the alternates by 3-12 spirals, the 3rd stamen preceding the 4th by 1-3 spirals, held above tepals in a circle around the pistil, sometimes partially inclined over and obscuring it; anthers white tinged with maroon, 0.6-0.8 mm long, 0.5-0.8 mm wide; thecae oblong, 0.3-0.4 mm wide, not at all or somewhat divaricate; pollen purplish violet fading to yellowish cream, sometimes faintly cinnamon-scented. INFRUCTESCENCE sessile with spathe persisting; to 41 cm long; spadix 20-25(44) cm long, 2.0-4.5 cm diam., with the berries scattered throughout; berries violet-purple, obovoid, truncate at apex, 4-6 mm long, 3-4 mm diam.; mesocarp mealy; seeds (rehydrated) oblong, ca. 5 mm long, 2 mm diam., adhering very closely to carpel wall throughout adaxial length.