Anthurium santiagoense Croat

Description based on dried material only. Terrestrial; stem 1.5-2 cm diam.; roots few, pale grayish, pubescent, elongate, to 4 mm diam.; cataphylls probably coriaceous, 10-13.5 cm long, acute at apex, yellow-green, persisting as fine, pale, linear fibers. LEAVES; petioles 24.5-27 cm long, 1-1.2 mm diam., triangular, flattened to broadly sulcate adaxially, the margins acute, acutely angled abaxially; blades subcoriaceous, ± broadly elliptic to oblong-elliptic, abruptly acuminate to long-acuminate at apex (the acumen 15-20 mm long), narrowly acute at base, 75-97 cm long, 21.5-29 cm wide, broadest just above the middle, matte to weakly glossy, greenish; midrib prominently raised above, higher than broad and paler than surface below; primary lateral veins 25-33 per side, departing midrib at 60-75° angle, straight-ascending to the collective vein, slightly raised above and below, slightly paler than surface below; interprimary veins almost as conspicuous as primary lateral veins, drying raised above and below; tertiary veins visible when dried, raised; collective vein arising from near the base, drying raised above and below, equally as prominent as primary lateral veins, 7-20 mm from margin. INFLORESCENCES with peduncle 20-48 cm long, 5-11 mm diam., drying greenish; spathe reflexed, subcoriaceous, green, broadly lanceolate, 7-8 cm long, 1.8-2.6 cm wide, broadest near the base, abruptly acuminate at apex, 4 mm long; stipe 7-17 mm long in front, 1-3 mm long in back; spadix deep purple, cylindroid, erect, sometimes slightly curved, 6.5-7 cm long, 5-6 mm diam. midway; flowers ± square, 1.5-2.1 mm in both directions; 7-10 flowers visible in principal spiral, 6-7 in alternate spiral; lateral tepals 0.9-1.2 mm wide, the inner margins ± straight, the outer margins 2-sided; pistils somewhat exserted; stigma ellipsoid, 0.3 mm long, droplets drying as abundant crystals and persisting; stamens emerging well above tepals; filaments translucent, flattened, 0.7 mm wide; anthers yellow, 0.4-0.5 mm long, 0.6 mm wide; thecae oblong, 0.2-0.3 mm wide, slightly divaricate; pollen fading to tan. INFRUCTESCENCE not seen.