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Araceae
Anthurium paraguayense var. coroicoanum Croat
SUMMARY
Terrestrial to epiphytic; stem to 20 cm long, 1-4 cm diam.; roots dense, greenish, pubescent, short, thick and blunt at apex, 2-5 cm long, 4-5 m m diam.; cataphylls subcoriaceous, lanceolate, unribbed, 2.5-10 cm long, acute at apex, green (B & K yellow-green 9/2.5), drying dark to medium brown (B & K yellow 3/2.5), persisting semi-intact, eventually as coarse linear fibers or as a reticulum of fibers. LEAVES erect to spreading; petioles 5.5-26 cm long, 4-5 mm diam., D-shaped to C-shaped, flattened with blunt to sharp margins adaxially, sometimes with a medial rib, rounded abaxially; geniculum paler than petiole, up to 11 cm remote from the base of the blade, 0.6-1 cm long; blades subcoriaceous, elliptic to ovate-elliptic, acute at apex, acute to prominently attenuate at base, 24-43 cm long, 8-25 cm wide, broadest at or near the middle, the margins broadly undulate; upper surface semiglossy to glossy, lower surface weakly glossy to semiglossy, both drying matte, brownish to brownish green; midrib sharply and acutely raised above, conspicuously paler than surface, convexly to obtusely raised at base below, becoming flat toward the apex, paler than surface; primary lateral veins 4-9 per side, departing midrib at 55-85° angle, weakly arcuate in the middle of the blade, ± reflexed at base, prominently raised above, raised below; interprimary veins weakly visible; tertiary veins visible; reticulate veins obscure; collective vein arising from about the middle of the blade, flat above and below, slightly darker than surface below, 1-7 mm from margin. INFLORESCENCES erect-spreading, shorter than leaves; peduncle 12.5-26 cm long, 4 mm diam. when fresh, 1-2 mm diam. when dried, 0.8-3.8x as long as petiole, green (B & K yellow-green 8/7.5), terete; spathe reflexed to recurled, subcoriaceous, medium green, sometimes tinged with purple at margins (B & K yellow-green 6/7.5), lanceolate, 3-5 cm long, 0.8-2 cm wide, broadest near the base, inserted at 30-60° angle on peduncle, acute to short-acuminate at apex (the acumen inrolled, ca. 2 mm long), acute at base, the margins meeting at 45° angle; spadix greenish tinged with reddish to pale pink, also reported as becoming purplish post anthesis, long-tapered to nearly cylindroid, erect, 4.5- 6.5 cm long, 4-8 mm diam. near base, 3-5 mm diam. near apex, broadest at the base; flowers rhombic to 4-lobed, 1.6-2.5 mm long, 1.8-2.2 mm wide, the sides jaggedly sigmoid; 7-9 flowers visible in principal spiral, (6)14-15 in alternate spiral; tepals semiglossy to matte, with droplets; lateral tepals 1-1.2 mm wide, the inner margins straight to convex, the outer margins usually 2-sided (meeting at ca. 90° angle), occasionally 3- 4-sided; pistils weakly exserted, dark brownish purple; stigma slit-like, 0.5-0.6 mm long; stamens emerging rapidly in a regular sequence from the base, held shortly above the tepals, the laterals preceding the alternates by 13-14 spirals, the 3rd stamen preceding the 4th by ca. 2 spirals; anthers orange to reddish purple, 0.4-0.5 mm long, 0.6-0.8 mm wide, inclined over and obscuring the pistil; thecae oblong, 0.3-0.4 mm wide; pollen yellow fading to white, weakly fruity-scented. INFRUCTESCENCE with purple berries.