Araceae
Anthurium cataniapoense Croat
SUMMARY
Epiphytic; stem 1.5-2.5 cm diam.; roots dense, spreading-ascending, ca. 3-12 cm long, ca. 3-4 mm diam.; cataphylls hook-shaped, to 6 cm long, acute and shortly apiculate at apex, drying dark brown to reddish brown, persisting as linear fibers. LEAVES erect-spreading; petioles 6-13 cm long, 11 -14 mm diam., D-shaped, flattened when young, broadly sulcate and with a prominent medial rib adaxially, 1-3-ribbed or rounded abaxially; geniculum paler and thicker than petiole, 1-1.5 cm long; sheath to 5 cm long; blades subcoriaceous, broadly elliptic-oblanceolate, acute to obtuse at apex (the acumen inrolled), narrowly acute to rounded at base, 60-117 cm long, 20-50 cm wide, broadest above the middle, the margins broadly undulate; both surfaces semiglossy, green (B & K yellow-green 6/5); midrib acutely raised, becoming higher than broad toward the apex above, concolorous with the surface, acutely raised and paler than surface below; primary lateral veins 11- 16 per side, departing midrib at 40-60° angle, arcuate- ascending to the margin, weakly rounded-raised and concolorous with the surface above, obscurely raised and paler than surface below; tertiary veins flat and darker than surface below; collective vein arising from near the apex or absent, less prominent than primary lateral veins, 5-13 mm from margin. INFLORESCENCES pendent; peduncle 32-53 cm long, 3-4 mm diam., (3)5-6(8) x as long as petiole; spathe spreading, subcoriaceous, green, sometimes tinged brownish or purplish adaxially, lanceolate-oblong, 9-26 cm long, 1-2.5 cm wide, acuminate at apex, acute at base; spadix maroon to dark purplish violet (B & K red-purple 2/2.5), sessile, tapered-cylindroid, slightly curved, 11.5-24.5 cm long, 3-5 mm (6.5) diam. at anthesis midway, 3 mm diam. near apex; flowers rhombic, 1.5-2.3 mm long, 1-1.6 mm wide; the sides sigmoid; 8-1 2 flowers visible in principal spiral, 6-13 in alternate spiral; tepals matte, smooth; lateral tepals 0.5-1 mm wide, the outer margins 2-sided, the inner margins straight to rounded; stigma linear-elliptic, 0.4-0.5 mm long; anthers 0.6-0.8 mm long, 0.6-0.8 mm wide; thecae oblong- obovoid, slightly divaricate. INFRUCTESCENCE. Fruits purple (observed by Anibal Castillo, Puerto Ayacucho).