Anthurium arisaemoides Madison

Terrestrial herb usually low to the ground but sometimes erect to 1.5 m, sometimes an epiphytic creeper to between 30 cm and 1.5 m; stems usually moderately short; internodes elongate (1-)3-10.5 cm long, 6-18 mm diam., medium to dark green or gray-brown, matte to semiglossy; cataphylls 4-7.5 cm long, green tinged purple, uppermost intact, deciduous or persisting as white membranaceous fibers at upper nodes. LEAVES evenly spaced along an elongate stem; petioles 9-41 cm long, 2-3 mm diam., terete or obtusely D-shaped or flattened, narrowly and shallowly or bluntly sulcate abaxially, slightly paler and rounded abaxially, dark yellow-green to medium green to purple-violet, weakly glossy to semiglossy; geniculum 12 mm long, swollen, especially abaxially, narrowly sulcate adaxially; blades trisect, 8-29.5 cm long, 10-30 cm wide, broadest at the middle, conspicuously bullate, subcoriaceous, light green to dark green and semiglossy to matte or weakly glossy above, moderately paler, matte to weakly glossy and net-sunken below; medial segment 12-21 cm long, 4-9 cm wide; lateral segment markedly inequilateral, 6.5-19 cm long, 2-10.5 cm wide, one side 3-13 mm wider; midrib narrowly or bluntly acute or raised and concolorous above, thicker than broad, narrowly rounded and slightly paler or reddish purple below; primary lateral veins thicker than broad, etched-sunken and concolorous above, bluntly acute, narrowly raised, convex and concolorous below; primary lateral veins on medial segment number 3-4, the 1st being a collective vein that approaches and parallels the margin at a slight inset, also marked by numerous scarious veins (visible at 30X magnification); primary lateral veins on lateral segment number 2-3 with each vein also being a collective vein with numerous scarious veins running in between; tertiary veins moderately obscure, weakly etched or deeply sunken above, obscure or raised below. INFLORESCENCES axillary, erect; peduncle half as long as petiole, terete, erect, purplish red, densely greenish speckled, 5 mm diam., weakly glossy; spathe ovate to oblong-linear, 3.2-8.3 cm long, 1-2.5 cm wide, reflexed, oblong, shorter than spadix, pale to medium green, tinged purple, erect-spreading, matte to semi-glossy outside, weakly to semiglossy inside reflexed, twisted; spadix sessile or with stipe 2-5 mm long, tapered, erect, 3-9 cm long, 6-8 mm diam. near base, 5-6 mm diam. at 1 cm from apex dark, yellow-green to pink, usually becoming purple at anthesis, weakly glossy to matte. Flowers 6-7 visible per spiral, 1.9-2 mm long, 2.1-2.2 mm wide, dark brown, conspicuously pale granular; lateral tepals 2.0-2.5 mm wide, narrowly shield-shaped or with outer margin 2-sided, inner margin rounded. INFRUCTESCENCE with spadix purplish violet; berries green, early emergent, ovoid, medium green, dark green at tip; flowers sub 4-lobed, difficult to discern, 5-6 per spiral; tepals shield-shaped, inner margin rounded, outer margin bluntly triangular.