Amorphophallus brevipetiolatus

Tuber elongate, napiform, sometimes irregularly branched, 10-16 cm long, 4-6 cm wide, dirty white. Leaf solitary; petiole 10-16 cm long, 0.75-1.25 cm in diam., smooth, green; lamina to 90 cm wide, the three rachises markedly inclined, barely winged, about as long as the petiole before again branching; leaflets several discrete on each rachis, elliptic, top acuminate, base broadly decurrent, 25-30 cm long, 10-12.7 cm wide, upper side glossy rich green, lower side paler. Inflorescence solitary, long-pedunculate; peduncle smooth, dark grayish green to reddish gray, 10-17 cm long, 0.5 cm in diam.; spathe erect, triangular, base convolute, top acuminate, 6-8 cm long, 2.5-3.5 cm in diam., outside grayish green with darker venation, inside pale green to cream, inside base with shallow warts. Spadix longer than spathe, sessile, 10.5-14 cm long; female zone cylindric, 0.6-1 cm long, 0.8 cm in diam., flowers congested; male zone cylindric, 4-4.25 cm long, 0.8 cm in diam., flowers congested; appendix narrowly conical, slightly constricted at the base, 5.5-8.5 cm long, 0.8 cm in diam. near the base, acute, smooth or shallowly rugulose, off-white. Ovaries obconical, angulate, depressed, upper part strongly truncate, ca. 1 mm high, ca. 1.5 mm in diam., pale green, unilocular; style very short, ca. 0.2 mm long, 0.5 mm in diam.; stigma disciform, circular in cross-section, slightly 3-lobed, shallowly grooved between lobes, verrucate, greenish-yellow. Male flowers consisting of 4-5 (-9) stamens; stamens ca. 1.2 mm long, creamy-white; filaments very short, ca. 0.2 mm, indistinctly connate with neighboring stamens; anthers truncate, 0.5-1 mm high, 1 mm in diam.; pore apical, slit-like, fusing to form a common large slit per theca at male anthesis; connective broad, truncate, ca. 0.6 mm wide.