Anthurium thrinax Madison

Usually terrestrial among rocks, rarely epiphyte. Stems short, runners from stem with tuber-like swellings, often stilt-rooted; internodes 1-2 cm long, 8-18 mm diam., dark green, semiglossy; cataphylls persisting intact, semi-intact or withering to light brown fibers, soon deciduous. Leaves erect-spreading; petioles terete, sharply and narrowly flattened adaxially, obscurely and narrowly sulcate with faint medial-rib adaxially, 21-116 cm long, ca. 4 mm diam., 1-3 times longer than the blades; blades 20-57 cm long, 16-38 cm wide, thinly coriaceous, dark green and subvelvety above, slightly paler and matte below, leaflets trisect oblong-elliptic or rarely elliptic, acuminate at apex, attenuate to cuneate at base, 25-35 (44) cm long, 7-9 (15) cm wide, with margins undulate; midrib narrow-raised above, narrow-raised and paler below; primary lateral veins 10-14 per side, arising at 45-55° angle, loop-connected, forming collective vein usually arising from base, rarely from one of the lower primary lateral veins; tertiary veins weakly quilted-sunken above, weakly pleated-raised below; tertiary veins darker than surface; collective veins 6-11 mm from the margins. INFLORESCENCE erect with peduncle slender, terete, spreading and recurled, 16-85 cm long, 2.5 mm diam., medium green or purplish green; spathe green to purplish green, sometimes tinted red, purplish at base, linear-lanceolate, 5-10 cm long, 6-10 mm wide, erect-spreading, reflexed persistent; spadix 5-10 cm long, 4-6 mm diam., pale green, ochre yellow, or bluish green, matte, stipitate to ca. 1 cm or rarely sessile; tepals matte; pollen white. Flowers 6-7 visible per spiral, 3.6-3.7 mm long, 3.0-3.3 mm wide, drying tan, smooth with a short row of whitish cellular inclusions along the margins; lateral tepaIs 1.8-2.0 mm wide, outer margins 2-sided, inner margin rounded. INFRUCTESCENCE: berries purplish red, globose.