Xanthosoma undipes (K.Koch & C.D.Bouché) K.Koch

Terrestrial, stems mostly 1-4 m long, internodes to 20 cm diam., the leaf scars ca. 30 em apart midway on tnmk, but leaves closely clustered at apex; internodes brown and scurfy, to 6 em long to 30 cm apart midway on trunk, 10-20 cm diam. on adult plants; petioles to nearly 1 m long, erect spreading, yellow-green, moderately glossy, terete, somewhat spongy, sheathed to 2/3 their length, about as long as the blades; blades broadly ovate, acute to obtuse at apex, prominently sagittate at base, to over 1 m long, to 85 em wide, broadest at or somewhat below point of petiole attachment; upper surface medium green and weakly glossy to matte, thinly coriaceous; lower surface markedly paler, somewhat bicolorous, and matte; anterior lobe to 65 cm long, 75 cm wide; posterior lobes to 50 cm long, 43 cm wide; sinus narrowly parabolic, to 30 cm deep; midrib broadly raised, slightly paler and semiglossy above, round-raised, matte and slightly paler below; primary lateral veins ca. 12 per side, departing midrib at 60°-75° angles, ascending to collective vein, round-raised, slightly paler, and semiglossy above, round-raised, paler, and matte below; tertiary veins in part weakly sunken above, raised below; reticulate veins in part distinct below; INFLORESCENCES several per axil; peduncle 14-16 cm long (in other parts of its range 8.5-34 cm), somewhat flattened, pale green, matte; spathe erect, 7-10 cm long, 3-4 cm wide; spathe tube to 6.5 cm long, pale green, tinged purple on front edge outside, weakly glossy, dark reddish purple inside, becoming purple-brown within post-anthesis) spathe blade white on both surfaces; spadix 10-18 cm long pistillate portion orange and staminate portion creamy-white, the sterile staminate portion creamy yellow. INFRUCTESCENCES erect; spadix 3-4 cm long, 2-3 cm diam., broadest at middle; berries pale green to greenish yellow.