Amorphophallus dunnii Tutcher

Tuber dark brown, subglobose or depressed globose, to 10cm high, to 12cm in diam., developing numerous offsets annually, these shortly narrowly fusiform, 1–3 × ca. 1cm. Leaf solitary; petiole green or grayish green with numerous elongate, confluent, pale green or brownish green spots, 30–60 × 1–1.5cm, glabrous; leaf blade to ca. 100cm in diam., rachises winged throughout; leaflets dark green adaxially, elliptic-lanceolate, 3–21 × 1.5–7cm, acuminate. Inflorescence solitary, long pedunculate, producing a scent of fresh carrots; peduncle colored as petiole, 20–60cm, 0.7–1.8cm in diam. at base. Spathe shortly convolute at base, outside bright pale green, basally with rounded white spots, these distally grading to whitish green, inside base or a larger patch reddish purple, remainder and limb as outside but paler, broadly ovate, strongly concave, 8.5–24 × 8.5–23cm, base within ridged-verruculose, apex acute, over-arching spadix. Spadix stipitate or rarely nearly sessile, slightly shorter than spathe, 8–20cm; stipe colored as peduncle but much paler, 0.5–1.5 cm; female zone cylindric, distal part occasionally broadened, 0.5–2.5 × 1–2.2cm, flowers congested; ovary pale green, depressed, angulate in cross section, 1–1.5mm high, 2–3mm in diam., 2- or 3-loculed, with 1 basal ovule per locule; style pale green, 0.5–1 × 0.8–1mm; stigma yellowish, flattened, ca. 1mm high, ca. 2mm in diam., 2- or 3(or 4)-lobed, oval or triangular in cross section, scabrous-verrucate, lobes obtuse; male zone broadly fusiform, 1.8–3 × 1.3–3.5cm, flowers congested; male flowers consisting of 4 or 5 stamens; stamens ca. 3 mm; filaments ca. 1.5 mm, basal 1/3 connate; anthers butterfly-shaped in cross section, ca. 1.5 × 1.5–1.8mm; pores elongate, apical but near margin, sometimes connected by an eccentric groove; pollen striate; appendix ivory-white, narrowly to broadly conic, usually slightly dorsiventrally compressed, occasionally substipitate, variable, hollow, 3–14cm, 1.3–4.5cm in diam. near base, glabrous or entirely echinate or verruculose, or only distal 1/3 so, base constricted and sometimes grooved, apex subacute or obtuse. Infructescence: fruiting zone cylindric, ca. 12 × 5cm. Berries crowded, shortly stalked, glossy dark blue, elongate, to ca. 1.8 × 1.5cm.