Anthurium chinimense Croat

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

Diagnostic

Characterized by ovate blades, dark olive-green to green-brown drying blades, and two prominent collective veins. It is similar to A. weberbauerii Engl. in that both species have somewhat ovate blades with two prominent collective veins. However, A. weberbauerii has blades that dry a more yellow-brown color and are only acute or even rounded at the apex.

General Description

Terrestrial; internodes ca. 1.5 cm long, drying ca. 1.3 cm diam.; cataphylls 5.5-9 cm long, finely ridged, oblong to lanceolate, persisting at upper internodes, remaining intact, then weathering to a reticulum of coarse tan fibers. LEAVES: Petioles 20.6-34.5 cm long, drying 3-4 mm diam., sometimes grooved near base, grayish brown to medium brown, finely ridged; geniculum shaped like petiole; slightly darkened, 1-2 cm long, drying 3-4 mm diam.; blades ovate, long-acuminate at apex (acumen 2-2.8 cm long), attenuate at base, 26-31.3 cm long (averaging 29 cm), 10.3-12.4 cm wide (averaging 11.5 cm), 2.4-2.5 times longer than wide, 0.9-1.3 times longer than petiole, drying olive to brownish green, weakly glossy, sometimes matte above, eglandular, slightly paler, weakly glossy to semi-glossy, densely glandular- punctate below; midrib 1-2 mm wide, concolorous to darker, convex to narrowly convex above; brown, narrowly rounded below; primary lateral veins 8-10 per side, 1-3 cm apart, departing midrib at a 55-60° angle (occasionally arising at an acute angle and then spreading to 55-60° angle), slightly curved to the collective vein, concolorous and almost obscure above, concolorous to brown and somewhat prominent below; collective veins usually 2, both arising at an acute angle from near base, the 2nd collective vein beginning to spread toward margin about 1-1.5 cm before the 1st, both more prominent than primary lateral veins, the 1st collective vein 0.5-2.5 cm from the margin, the 2nd 5-1 mm from margin near base, less than 1 mm from margin near middle and apex of blade. INFLORESCENCES with peduncle 25-35.5 cm long, drying 2-3 mm diam., drying grayish brown or darkened; spathe reflexed-spreading, green, linear, ca. 7 mm × 1-1.2 cm; spadix green, more or less erect, 7.5-8.5 cm × 3-5 mm. Flowers 2-2.5 × 1.9-2 mm, 5 visible per spiral; lateral tepals 1.2-1.4 mm wide, 2-sided.

Habitat

Premontane wet forest (P-wf) and Tropical moist forest (T-mf) life zones.

Distribution

Known only from northern Perú (Amazonas, Bagua).