Anthurium boosianum

Terrestrial or hemiepiphytie in the understory, to 1 m tall, stem to 30 em long; internodes short, 5.5-6 em diam.; cataphylls 11.4-26 cm long (averaging 20.2 cm), moderately coriaceous, medium green to purple, semiglossy, persisting semi-intact at upper nodes, soon fibrous-deciduous except for a few pale loose fibers at base; petioles 89-182 cm long (averaging 141 cm), 3.5-4 em diam. at base, 10-11 mm diam. midway, 7 mm diam. below geniculum, subterete and weakly flattened adaxially to terete with no sign of sulcus, medium green to dark green and glossy; geniculum 2.5-5.5 cm long, 1.1 mm diam., terete, weakly sulcate, dark green to yellow-green, smooth, short-lineate; blades 34-83 em long, 33-65 cm wide (averaging 64 x 49 cm), subcoriaceous, epunetate, semi-acuminate at apex, dark green, semiglossy above, moderately paler and matte to weakly glossy below, drying semiglossy, yellowish green on upper surface and pale gray-green on lower surface, widest point above petiolar plexus but below middle, margin convex; midrib narrowly rounded to bluntly acute and slightly paler above, round-raised and paler below; primary lateral veins 10-28 on each side (averaging 17), narrowly quilted-sunken or furrowed and concolorous above (the lowermost with raised ridge in deep valley), bluntly acute to narrowly rounded and slightly paler below; tertiary veins in part raised, concolorous above, prominulous and concolorous below; collective veins arising from the 4th pair of basal veins, 2-3.5 mm from the margin; anterior lobe 25-65 cm long (averaging 45 cm), broadest somewhat above petiole attachment; posterior lobes 16-31 cm long, 9.5-27 cm wide; sinus hippocrepiform to spathulate, 12.5-19 cm deep (averaging 16.5 cm), 6-7 cm wide; basal veins 7-8 pairs, 15t pair free to the base, 5th and higher order pairs coalesced to 5.5 cm; posterior rib markedly curved, naked for 4.5-13 cm; surfaces moderately smooth and epunctate on both sides. INFLORESCENCE erect; peduncle erect, terete, 10.8-28 cm long (averaging 19 cm), purplish, semiglossy; spathe subcoriaceous, shiny dark purple, erect to spreading, glossy outside, semiglossy to weakly glossy inside, 17-27.5 cm long, 1.2-6 cm wide (averaging 21.3 x 2.8 cm), reflexed and slightly curled under; spadix 15.5-29.2 cm long, 1.1-11.0 cm diam. at base, .8-2.5 cm diam. midway (averaging 21.3 x 1.6 cm), .4-1.9 cm diam. at 1 cm from tip, creamy white at base becoming pale green further up, matte, the tip yellow-green, post-anthesis in specimen examined sessile 29.2 cm long, 2.2 cm diam. at base, 1.4 cm diam. midway, 5 mm diam. at 1 cm from tip matte; stamens exserted; flowers rhombic to sub 4-lobed, 8-11 flowers visible per spiral, 1-1.4 mm long, 1.1-1.7 mm wide; tepals matte when dried, lateral tepals .5-.7 mm wide. INFRUCTESCENCE erect; berries dark red, narrow and pointed, early-emergent.