Anthurium fosteri Croat

Epiphyte; internodes elongated, to 7 cm long, 1 cm diam., drying dark brown and smooth; cataphylls drying intact and persistent, 4 cm long; petioles terete, 20-29 cm long, drying dark brown, 3 mm diam., sheathed to 4 cm; geniculum 2-3 cm long, not noticeably thickened but slightly darker; blades narrowly ovate-cordate, 18-24 cm long, 11-13 cm wide, 1.8-2 times longer than broad, .8-.9 times as long as petiole, drying dark brown and matte above, paler and yellow-brown, weakly glossy below; anterior lobe 15-21.3 cm long, broadly convex along margins; posterior lobe narrowly rounded 5-5.5 cm long, 4.5-5.5 cm wide midway; sinus arcuate, 2-3 cm deep; midrib drying narrowly raised and more or less concolorous, bluntly acute above, bluntly angular, darker and minutely granular below; primary lateral veins 3-4 pairs, arising at 45° angle, scarcely more prominent than the primary lateral veins; minor veins drying wrinkled-undulate; basal veins 2-3 pairs, the uppermost forming the collective veins, 1-1.5 cm from margin midway; upper surface drying moderately smooth, with scattered pale-lineations; lower surface drying moderately smooth but minutely granular at higher magnifications. INFLORESCENCE erect; peduncle 14 cm long, drying dark brown, finely ridged, 2.5 mm diam.; spathe 10 cm long, 2.6 cm diam., extremely decurrent at base with the spadix arising 5 cm above the base, narrowly rounded and short-apiculate at apex; spadix cylindric, 7 cm long, drying to 9 mm diam., protruding 1.5 cm beyond spathe, yellow, drying dark brown; flowers 4-sided, ca. 10 per spiral, 2.3-2.4 mm long, 3.0-3.2 mm wide; lateral tepals 1.4-1.5 mm wide, the outer margins 2-sided, inner margins rounded, turned up against the pistils, drying minutely granular. INFRUCTESCENCE: Berries not known.