Anthurium × selloum K.Koch

Description based on dried material only. Epilithic; stem and cataphylls unknown. LEAVES with petioles ca. 34-45 cm long, ca. 7 mm diam., mostly spreading, apparently D-shaped, slightly flattened laterally, sulcate adaxially, with the margins acutely raised, rounded abaxially; geniculum thicker and paler than petiole, 1-1.5 cm long; sheath 4 cm long; blades subcoriaceous, oblong-ovate, somewhat triangular, acute to weakly and shortly acuminate at apex (the acumen ca. 10 mm long), broadly and shallowly cordate at base, 36-46 cm long, 14-19 cm wide, broadest in the basal third, the margins conspicuously and broadly undulate; apex of posterior lobes rounded; sinus parabolic-arcuate, 3 cm deep; both surfaces weakly glossy, yellowish brown and greenish in part; midrib apparently convexly raised above and below; major veins convexly raised, paler than surface and yellowish above and below; basal veins 3-4 pairs, 2nd & 3rd to 4th coalesced for up to 1.3 cm; primary lateral veins 3-5 per side, departing midrib at 25-45° angle, mostly straight, sometimes arcuate to the margin; interprimary veins sometimes present, ranging from not as conspicuous as to almost as conspicuous as primary lateral veins; tertiary veins conspicuous above and below; reticulate veins obscure above, weakly visible below; collective vein arising from uppermost ½ or ? of the blade, less prominent than primary lateral veins, to 11 mm from margin. INFLORESCENCES apparently ± spreading; peduncle 39-73 cm long, 2-4 mm diam., 1.1-2.1 x as long as petiole, pale green, subterete; spathe semi-erect to reflexed, thinly coriaceous, ale green, oblong-lanceolate, 7.5-13.5 cm long, 0.8-1.4 cm wide, broadest near the base, inserted at 40-50° angle on peduncle, narrowly acuminate to caudate at apex (the acumen 10-20 mm long), acute to obtuse at base; spadix dark maroon purple to brownish purple, long-tapered, sessile, held at 150-170° angle from peduncle, 14-27 cm long, 6-8 mm diam. near base, 2-3 mm diam. near apex, broadest near the base; flowers rhombic, 1.6-2.4 mm long, 1.7-2.8 mm wide, the sides jaggedly to smoothly sigmoid; 7-8 flowers visible in principal spiral, 4-6 in alternate spiral; tepals roughened, lateral tepals 1.1-1.5 mm wide, the inner margins usually broadly convex, sometimes straight, the outer margins 2-sided; stigma broadly ellipsoid, 0.4-0.6 mm long, densely brush-like; filaments apparently flattened, 0.4-0.5 mm long, 0.5-0.7 mm wide; anthers yellow, 0.5-0.6 mm long, 0.4-0.5 mm wide; thecae oblong, not divaricate. INFRUCTESCENCE not seen.