Anthurium tenuifolium Engl.

Terrestrial or epiphytic; internodes short or to 1.5 cm long, 5-8 mm diam., weakly sulcate; cataphylls to 11 cm long, more or less deciduous, or persisting as a weak, pale fiber bases; petioles 10-19.5 cm long (averaging 16.3 cm), 2-3 mm diam. at middle; blades oblong-lanceolate, acute at base, narrowly acuminate at apex, 24-45 cm long, 7-11 cm wide (averaging 31.8 X 8.7 cm), 3.2-4.1 times longer than broad, 1.7-2.3 times longer than the petioles; upper surface drying dark olive; lower surface drying moderately paler; midrib narrowly and weakly raised above upon drying, quite prominently and narrowly round-raised below; primary lateral veins 10-12 per side, departing midrib at 45°-60° angles, ascending to collective vein in a weak arc, more or less flat and moderately inconspicuous above, more prominent and narrowly raised below; interprlmary veins nearly as conspicuous as primary lateral veins, especially below; tertiary veins in part raised below; collective vein about as prominent as primary lateral veins, 4-8 mm from margin; (venation all described from dried material); INFLORESCENCES erect or erect-spreading; peduncle 12-20 cm long, 1.5-2 mm diam. at middle; spathe 6-7 cm long, 1-1.2 cm wide, linear-lanceolate, acuminate at apex; spadix green, sessile, 6-8 cm long, 4-S mm diam. Flowers 1.4-1.5 mm long, 1.6-1.8 mm wide.