Anthurium silvigaudens Standl. & Steyerm.

Epiphytic or usually terrestrial to 120 cm tall; stems green, 2 cm diam.; internodes 1-2 cm long; leaf scars 1.4 cm wide; roots medium thick, pale green, directed downward; cataphylls subcoriaceous, 6-13 cm long, the apex round with a minute apiculum, drying tan (B & K Yellow-red 9/ 10), weathering to linear fibers and persisting. LEAVES usually erect; petioles 23-54 cm long, 5-6 mm diam., terete; geniculum 1.5-2 cm long; blades ovate, moderately thin, gradually acuminate at apex, lobed at base, 22-48 cm long, 13-31 cm wide, broadest just below middle; anterior lobe 17-33 cm long, the margins convex: posterior lobes 8.2-15 cm long, directed upward; the sinus hippocrepiform to spathulate, round to acute at apex; both surfaces matte (cells on lower surface glistening and weakly papillate); the midrib sharply raised above, diminishing at center, sunken at apex, bluntly raised below; basal veins 4-7 pairs, the first and second (sometimes third) free to base, the third to seventh coalesced 1-3.5 cm; posterior ribs naked, upturned; primary lateral veins 4-6 per side, departing midrib at 45°-55° angle, sunken in valleys above, raised below, straight or arching to collective vein; lesser veins prominulous above and below; collective vein arising from first or second basal vein, 4-10 mm from margin. INFLORESCENCE erect, much shorter than leaves; peduncle 3.5-10 cm long, 6-7 mm diam., terete, shorter than petioles; spathe subcoriaceous, medium green (B & K Yellow-green 7/10), ovate, 5.5-8.5 cm long, 4.3-6 cm wide, broadest just above point of attachment, abruptly acuminate at apex, cordate at base, inserted at 40° angle on peduncle; the stipe 7-15 mm long in front, 4 mm long in back, tapered at base of spadix, medium green; spadix medium green (B & K Yellow-green 7/2.5), 2.5-5.2 cm long, 1.4-2 cm diam. at base, 5-8 mm diam. at apex; flowers rhombic to sub-4-lobed, 3.5-4 mm long, 3.6-4 mm wide, the sides sigmoid to jaggedly sigmoid, sometimes broadly rounded parallel to the spirals; 5 flowers visible in the principal spiral, 7 flowers visible in the alternate spiral; tepals matte to semiglossy, lateral tepals 2.2-2.5 mm wide, the inner margin broadly rounded and turned up against the pistil; the pistil emergent to ca. 0.7 mm, darker green than tepals; stigma 0.3 mm long, round, brushlike, glistening; stamens emerging promptly throughout the spadix (sometimes beginning at apex), the lateral stamens emerging throughout before the alternates emerge, the third and fourth stamens following in rapid sequence after 1 or 2 days; filaments exserted. 0.5 mm long, translucent; anthers pale yellow, retracted to upper edge of tepals, 0.7-0.8 mm long, 1 mm wide; thecae oblong-ellipsoid, slightly divaricate; pollen creamy white. INFRUCTESCENCE erect; spathe persistent: spadix 4-6 cm long, 2.5-4 cm diam.; berries obovoid, vermillion-coral (see Steyermark 51703), rounded at apex, 11-13 mm long, 6-8 mm diam.; seeds 2, oblong-obovoid, weakly flattened, 5.5-7.5 mm long, 3.5-4 mm wide, 2-2.5 mm thick.