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Araceae
Amorphophallus tuberculatus Hett. & V.D.Nguyen
SUMMARY
Tuber depressed globose, ca. 10 cm in diam., ca. 8 cm high, densely covered with thick, short elongate protrusions, not associated with root-scars. Petiole 50 cm long, 2.5 cm in diam. smooth, somewhat succulent, pale brown with faint, elliptical, paler spots; lamina 120 cm in diam., highly dissected, rachises winged distal from the basal branchings, most proximal supernumerary leaflets very short petiolulate; leaflets closely set, elliptical to elongate elliptical, 3-25 cm long, 1.5-7 cm in diam., acuminate. Inflorescence appearing during leaf breakdown and maturing shortly after that; longest cataphyll 17 cm long, pale pink and white; peduncle 20 cm long, 1.8 cm in diam. smooth, dark purplish brown with scattered greyish brown, elliptical spots; spathe broader than long, triangular-ovate, 9 cm long, 13 cm in diam., strongly convolute, limb and base not separated, margin slightly revolute, apex acute, outside white with pale pinkish flushed veins and a pinkish flush near the base, inside white, base inside smooth; spadix sessile, longer than spathe, 15.5 cm long; female zone subcylindric, dorsiventrally compressed, apex slightly expanded, 3 cm long, 2.3 x 1.8 cm in diam., at the base, 2.5 x 1.6 cm in diam. at the apex, flowers congested or contiguous; male zone urceolate, strongly dorsi ventrally compressed, apex slightly dilated, base constricted, 3 cm long, 2.5 x 2.2 cm in diameter at the base, 4.3 x 2.5 cm in diam. close to the apex, flowers congested; appendix shortly and broadly conical, base slightly dorsiventrally compressed, apex slightly laterally compressed, 8.5 cm long, 5 cm in diam. just above the base, tapering to the apex, surface smooth with a few irregular shallow depressions, off-white, producing a clear candy-like smell (organic acetates). Ovary globose to ovoid, 2.5 mm long and 2-2.5 mm long, unilocular, pink; style very short, 0.5 111111 long, 1.2 mm in diam., off-white; stigma depressed, 1.5 mm in diam., 0.5 mm high, minutely echinate, off-white. Male flowers consisting of 3-4 stamens; stamens 1 mm long; filaments 0.5 mm long, entirely fused, off-white; anthers 0.5 mm long, 1-1.5 mm in diam., truncate, off-white, pores apical, elliptical. Pollen striate.