Anchomanes giganteus

Tuber very large. LEAF present at the time of flowering, about 31/2 ft. diam.; petiole attaining a height of 8 ft., prickly; the 3 primary divisions of the leaf 2-3-pinnatisect, lowest segments subtripartite, following segments pinnatisect, with 2-3 pairs of leaflets, ultimate segments much larger and bipinnatisect; lowest of the tertiary segments ovate-lanceolate, subacute; middle pinnatipartite, with about 2 pairs of leaflets; ultimate pinnatipartite, with about 3 pairs of leaflets. Leaflets obliquely oblong-lanceolate, decurrent on the rhachis. INFLORESCENCE: Peduncle 5-51/2 ft. long, prickly. Spathe 3 ft. long, elongated-lanceolate, scarcely acuminate. Spadix sessile; female part 3-4 in. long; male part 6-8 in. long, 3/4-11/6 in. thick. Ovary shortly ovoid; style tuberculate.