Gonatopus boivinii (Decne.) Engl.

Tuber turnip-shaped. LEAF solitary, erect, 1 1/2-4 1/2 ft. high, tripinnatipartite, glabrous; lowest branches 10–12 in. long, about 5 in. broad; leaflets or ultimate segments 1 1/4-3 in. long, 1 1/2-4 lin. broad, probably sometimes larger, linear or linear-lanceolate, acute, more or less decurrent at the base, not articulated to the rhachis. INFLORESCENCE: Peduncle 2-3 in. long, smooth. Spathe glabrous; tube 1-1 1/4 in. long, oblong-ovoid; limb about 3 in. long, and 1 1/4 in. broad, reflexed, oblong, cuspidate. Spadix sessile, shorter than the spathe; female part 8–9 lin. long, about 1/3 in. diam. cylindric; male part about 2 1/2 in. long, cylindric, obtuse, its basal portion for about 8 lin. constricted to about half the thickness of the upper portion and covered with abortive flowers. Perianth-segments oblong, truncate at the angular apex. Ovary ovoid, narrowed into a short stout style, 2-celled; stigma rather large, peltate, exserted just beyond the perianth-segments. Stamens in the male flowers 4, connate into a tube around an abortive ovary and equalling it in length, entirely absent in the female flowers.