Amorphophallus haematospadix Hook.f.

Tuber depressed globose or subglobose, 2–12 × 2–9 cm producing few annual offsets, these globose, fusiform or obovate, ca 5 × 2 cm. Leaf solitary; petiole uniformly green or olive-green, smooth, 50–85 × 1–3 cm; leaf blade 60–80 cm, rachises broadly winged, except the most proximal parts; leaflets lanceolate, 7–26 × 2–6.5 cm, acuminate, leathery, adaxially dark green, moderately glossy, venation very dense, secondary veins very closely spaced. Inflorescence long pedunculate; peduncle appearance as petiole, 17–40 cm × ca 8 mm; spathe elongate triangular, apiculate, 8–21 × 4–7 cm, margins of limb strongly reflexed, limb on both sides creamy to yellowish white, base exterior creamy or yellowish white, suffused towards the base with pale purplish green, interior dark purple, base within bearing transverse ridges, in between with or without small, punctiform warts; spadix sessile, slightly longer than spathe, occasionally shorter, 9–22.5 cm long; pistillate flower zone shortly cylindrical, 7–10 cm × 6–15 cm, flowers congested; ovaries globose, ca 2.5 × 2.5 mm, creamy white; style slender, 2–3 × 0.5 mm, reddish brown; stigma subglobose, 0.5 × 0.6–0.8 mm, entire or 2-lobed, verruculose, dark grey, lobes rounded; staminate flower zone cylindrical or slightly obconical, 7–15 × 1.3–2.5 cm, flowers congested; staminate flowers 3–4-androus; stamens, dull dark blackish purple; appendix cylindrical-clavate, 8–19.5 × 1–2 cm, basal half terete, upper half slightly fusiform and slightly laterally compressed, apex rounded, glossy or dull reddish to dark greyish black with a faint reddish purple hue, base with or without several diamond-shaped, flattened staminodes, some of these with a small conical process. Fruit not seen.