Araceae
Anthurium colonicum K.Krause
SUMMARY
Epiphytic; stem short, 5-7 cm diam.; leaf scars obscured by root mass and cataphylls, 1.5- 1.8 cm high, 3.5-4 cm wide; roots moderately numerous, descending, green, smooth, slightly tapered; cataphylls coriaceous, erect, lanceolate, 20-36 cm long, acute to obtuse at apex with a subapical apiculum which appears hooked, green, drying tan (B & K yellow-red 9/10), persisting intact eventually as linear fibers or deciduous. LEAVES spreading; petioles 26-90 cm long, subterete, narrowly to broadly and bluntly sulcate adaxially, the margins blunt, not raised, rounded abaxially, the surface pale speckled; geniculum 2-6 cm long; blades coriaceous, ovate-triangular to oblong-ovate, short-acuminate at apex (the acumen to 30 mm long), broadly to deeply subcordate at base, 39-83 cm long, (9)13-44 cm wide, broadest below the middle, the margins undulate; anterior lobe 38-76 cm long, the posterior lobes (5.5)8-17 cm long, about as broad as long; sinus arcuate, arcuate with blade decurrent on petiole or hippocrepiform in large blades; upper surface weakly glossy to semiglossy, dark green, lower surface semiglossy to glossy, paler; midrib flat to slightly angular-raised at base, gradually becoming acutely to obtusely angular toward the apex above, prominently and convexly raised below; basal veins 2-4 pairs, usually free to base, sometimes coalesced for 1-2.5 cm; posterior rib naked, sharply turned upward on outer margin; primary lateral veins 1 1-17 per side, departing midrib at 50-65° angle, straight to weakly arcuate, convexly raised near the midrib, becoming sunken toward the margin above, prominently and narrowly raised and paler than surface below; interprimary veins few, weakly sunken to raised above, raised below; tertiary veins obscure or weakly sunken above, weakly raised, darker than surface below; collective vein arising from one of the lowermost primary lateral veins or 1st basal vein, sunken above, raised and darker than surface below, 3-5 mm from margin. INFLORESCENCES spreading to pendent; peduncle 15-48 cm long, 6-13 mm diam., 0.5 as long as petiole, terete; spathe strongly reflexed and recurled, markedly undulate, coriaceous, dark green heavily tinged with violet-purple, lanceolate to broadly lanceolate, 10-18.5 cm long, 2.5-6 cm wide, broadest just above the base, inserted at 60-65° angle on peduncle, acuminate at apex (the acumen cuspidate), acute to obtuse at base; stipe to 1 cm long; spadix green tinged with violet-purple, sessile or sometimes stipitate, tapered, (5)15.5-28 cm long, 1.2-3 cm diam., near base, 0.7-1.7 cm diam. near apex; flowers 4-lobed, 2.3-3 mm long, 2.8-3 mm wide, the sides sigmoid; 6-1 1 flowers visible in principal spiral; tepals matte, punctate; lateral tepals 1.4- 1.9 mm wide, the inner . margins broadly convex, turned up against pistil; pistils emergent to 1-3 mm, pale green, longer than the stamens at anthesis; stigma linear, ca. 0.5 mm long, droplets appearing ca. 1 week before stamens emerge; stamens emerging from the base, lateral stamens quickly followed by alternates in rapid succession, held above tepals and against pistil; filaments fleshy, transparent, 2-2.5 mm long; anthers 0.9-1.2 mm long; thecae ovoid-ellipsoid, slightly divaricate; pollen white. INFRUCTESCENCE pendent; berries orange (B & K yellow-red 8/7.5), narrowly ovoid-ellipsoid, acute at apex, ca. 10 mm long; seeds 2 per berry, pale yellow-green, brownish at apex and base, 4-4.8 mm long, 2.3-2.5 mm diam., enveloped by sticky, amber substance.