Amorphophallus brevispathus Gagnep.

Tuber elongate, 4–10 × 2–4 cm, branching freely, developing few or numerous, massive, rhizomatous offsets, 2–10 × 1–2 cm; Leaf solitary; petiole smooth, 17–50 cm × 5–10 mm, uniformly pale green; leaf blade moderately dissected, 30–76 cm diam., rachises winged distally from the main branching-points; leaflets large, oblanceolate-elliptic, apex abruptly shortly acuminate, 9–35 × 3.5–12 cm. Inflorescence solitary, long pedunculate; cataphylls to 25 cm long; peduncle appearance as petiole, 12–36 cm × 5–10 mm; spathe erect, broadly triangular, base convolute, not separated from the limb, apex acute, 5–8 × 5–10 cm, exterior whitish green or off-white, interior as exterior but base slightly greener, base within densely clothed with irregular, shortly elongate or ridge-like, fleshy warts; spadix longer than spathe, sessile, 7.5–18 cm long; pistillate flower zone cylindrical, 1–1.5 × 1 cm, flowers congested; ovaries slightly depressed, 2–3 × 1.5–2 mm, slightly angular in cross-section; style short, 1 × ca 1.2 mm, pale green; stigma large, disciform or slightly hemispherical, 1 × 1.5–2 mm, entire or with a very shallow central depression, surface echinulate, white; staminate flower zone slightly obconical or cylindrical, 2–3 × 1–5 cm, flowers congested; staminate flowers 4–6-androus; stamens connate, white, connective consisting of conspicuously large cells, pores apical, near the centre, elongate, the connective rupturing at anthesis to form a large, cross-shaped aperture together with the pores, surrounded by four ‘valves’; appendix elongate conical, acute, 5–14 cm × 1–1.6 cm, smooth, whitish. Fruit not seen.