Alocasia odora (Lindl.) K.Koch

Massive, pachycaul, evergreen herb to 2.5 m with slightly milky latex. Stem erect to decumbent, with short stolons terminating in tubercles arising from the base. Leaves several to rather many together, clustered at the tips of stems of larger plants; petiole to 1.5 m long; petiolar sheath membranous; leaf blade peltate, cordate-sagittate or cordate-ovate, to 130 × 100 cm, apex short acuminate, base margins undulate; primary lateral veins 9–12 on each side; interprimary veins forming well-defined interprimary collecting veins. Inflorescences 2–3 together, subtended by membranous cataphylls, powerfully fruity-fragrant at anthesis; peduncle stout, ca 35 cm long, exceeding the cataphylls at anthesis, medium dull green; spathe ca 13–25 cm long, constricted about 1/6 of the way from the base; lower part ovoid, grey-green glaucous; spathe limb broadly oblong-lanceolate, 10–30 × 4–8 cm, remaining erect and hooded at anthesis, submembranous, exterior grey-green, conspicuously glaucous, interior greenish white; spadix shorter than the spathe, shortly stipitate. Pistillate flower zone 1–2 × ca 1.5 cm; ovaries medium green, ca 2 mm diam., almost perpendicular to the spadix axis; stigma almost sessile, very obscurely 3-lobed, very pale green, coated in viscous white secretion at pistillate anthesis; sterile interstice tapering gradually away from the pistillate zone, equalling the staminate zone, ivory, very slightly narrowed corresponding to the spathe constriction; synandrodia composed of rhombo-hexagonal stamens, ca 2.5 mm diam., the lowermost enlarged and regularly annulate; staminate flower zone cylindrical, ca 3–5 × ca 2 cm, whitish; synandria rhombo-hexagonal, convex-topped owing to cap-forming synconnective, ca 1.5 mm diam.; appendix elongate-conical, 3–5.5 × 1–2 cm, equalling length of the spadix, markedly thicker than the staminate zone at the base, then gradually tapering, white; Fruiting spathe ca 6 cm long, glaucous to almost pruinose; fruits globose, ca 1 cm diam., ripening scarlet.