Anthurium crassinervium (Jacq.) Schott
- CATE Araceae
- Published in
- (Jacq.) Schott, Wiener Z. Kunst 1829(3): 828 (1829)
- Anthurium crassinervium
Ranges throughout northern Venezuela in the states of Aragua, Carabobo, Falcón, Lara, Mérida, Miranda, Portuguesa, Táchira, Trujillo, Yaracuy, Zulia, and the Distrito Federal. It has also been found in Colombia in the departments of Cesar, Guajira, Magdalena, and Santander and on Curaçao in the Netherlands Antilles at 350 m.
Epiphytic, epilithic or terrestrial, sometimes colonial; stem short, 2.5-4 cm diam.; roots dense, ascending, smooth; cataphylls subcoriaceous, 7- 13 cm long, acute at apex, drying medium brown (B & K yellow 4/7.5), persisting ± intact, weathering into reticulum of fibers. LEAVES erect to spreading; petioles 3-33.5 cm long, 4-11 mm diam., D-shaped to quadrangular or thicker than broad, broadly and shallowly sulcate to V-sulcate, rarely narrowly sulcate adaxially, the margins acute, rarely inclined inward, flattened to rounded or 3-5-ribbed abaxially; geniculum somewhat thicker and paler than petiole, 0.8-2 cm long; blades moderately coriaceous, oblanceolate, gradually acuminate or rarely rounded at apex, acute to somewhat obtuse at base, 25-142 cm long, 11-52 cm wide, broadest usually above the middle, the margins undulate; both surfaces matte to semiglossy, slightly paler below, often pale-pustulate and/or with pale or dark punctations; midrib flat with a conspicuous medial rib near the base above, becoming acutely raised near the middle, sharply raised below, sometimes 3-ribbed at base; primary lateral veins 6-14 per side, departing midrib at 40-70°angle, ± straight or arcuate to the margin, prominently raised near the midrib above, then sunken and merging with margin, raised below, drying raised and paler on both surfaces; interprimary veins not apparent; tertiary veins flat and slightly visible above, visible and darker than surface below; collective vein arising in the upper ? or in the upper ¼ of the blade, prominulous when dried. INFLORESCENCES erect to spreading; peduncle (13)20-98 cm long, 5-12 mm diam., 1-3(5) x as long as petiole, terete, sometimes ribbed near the base of spathe; spathe spreading to reflexed, moderately thin, green, sometimes tinged with purple, lanceolate, 8-12.5 cm long, 1.5-2 cm wide, broadest near the base, often decurrent at base; spadix dark purple or violet to green or green tinged with purple, tapered, sessile or stipitate to 12 mm, (6)12-33 cm long, 7-10 mm diam. near base, 4-7 mm diam. near apex; flowers rhombic to 4-lobed, 2.4-3.1 mm long, 1.6-2.8 mm wide, the sides jaggedly sigmoid; 7-10 flowers visible in principal spiral, 5-10 in alternate spiral; tepals matte; lateral tepals 1.2-1.5 mm wide, the inner margins rounded, tinged with violet-purple; pistils emergent, violet-purple; stigma linear, 0.5 mm long; stamens emerging from the base of the spadix, laterals emerging to midway followed by alternates in rapid succession, arranged in a circle around the pistil just above the tepals; anthers pale orange (B & K yellow-red 8/7.5) 0.7 mm long, 1 mm wide; thecae ovoid, slightly divaricate; pollen pale orange, white when dried. INFRUCTESCENCE pendent; berries red, ovoid, basally attached to spadix by 4 tepalar fibers, 7.6-8.2 mm long, 3-3.5 mm diam. on rehydration; pericarp studded with raphide cells; seeds 1- 2 per berry, pale yellowish, with raphide cells, ellipsoid, 3.6-4.4 mm long, 1.6-2.2 mm diam., 0.8-1.6 mm thick, with a mucilaginous apical appendage.
The species is ecologically quite variable, occurring in tropical moist, tropical dry, premontane wet, premontane wet (transitional to warm), premontane moist, premontane dry, subtropical dry, and subtropical thorn forest transitional to subtropical dry forest.