Anthurium manuanum Croat

Description based on dried material only. Epiphytic; stem 1.5 cm diam.; roots brownish gray, densely woolly-pubescent, elongate, at least 3 cm long, 1-1.5 mm diam.; cataphylls probably subcoriaceous, 3-7.5 cm long, acuminate at apex, brown to brownish gray, persisting intact at least at the upper nodes, probably persisting as a reticulum of fibers on the lower ones. LEAVES erect to spreading; petioles 4.5-9 cm long, 3-4 mm diam., ± D-shaped, sulcate with the margins and medial rib prominently raised adaxially, ± rounded abaxially; geniculum slightly darker than petiole, ca. 0.5-0.9 cm long; sheath 1.5-2.3 cm long; blades subcoriaceous, oblanceolate, acuminate at apex (the acumen ca. 2 cm long, apiculate), long-attenuate at base, 26-39 cm long, 7-12 cm wide, broadest above the middle, the margins probably undulate; upper surface matte, lower surface matte to semiglossy, both surfaces tan to dark brown; midrib prominently convex at base, becoming sharply acute toward the apex above, convexly raised and slightly darker than surface below; primary lateral veins 6-7 per side, departing midrib at 50-55° angle, straight, becoming arcuate-ascending to the margin or to the collective vein in the upper third of the blade, prominently raised above, flat to weakly raised below, slightly paler than surface; interprimary veins few, weakly raised above and below; tertiary veins prominulous, very weakly raised above and below; collective vein arising from near the very raised above and 4-7 mm from margin. INFLORESCENCES erect, much shorter than leaves; peduncle 8 cm long, 1-2 mm diam., about equalling petiole, dark brown, spathe reflexed, subcoriaceous, brownish, linear-lanceolate, 4-5 cm long, 0.8 cm wide, broadest near the base, acuminate at apex, acute at base; stipe ca. (2)7 mm long in front, 1-2 mm long in back; spadix grayish brown, glaucous, cylindroid, held at 150° angle from peduncle, 4.2 cm long, 3-4 mm diam.; flowers rhombic, 1.9-2.3 mm long, 1.5-1.8 mm wide, the sides jaggedly sigmoid, sometimes straight; 6-7 flowers visible in principal spiral, 4-6 in alternate spiral; tepals densely papillate; lateral tepals 1.2-1.4 wide, the inner margins straight, occasionally broadly convex, pale, erose, the outer margins 2-3-sided, a few 4-sided; pistils with exposed area 0.6-1 mm diam., ±square; stigma ± ellipsoid; anthers yellowish, ca. 0.6 mm wide. INFRUCTESCENCE not seen.