Alocasia macrorrhizos

A. macrorrhizos is a glabrous, terrestrial herb, normally around 1-1.5 m tall but growing up to 5 m (Manner, 2011). Plants are acaulescent with a short, conical corm, produce watery sap and develop an elongated caudex with age. Leaves are arranged in a rosette, ascending;blades flattened, ascending, with basal sinus projecting downward, 25-50 (-100) ? 20-36 (-100) cm, green (although white-variegated in some cultivars), slightly lustrous, lance-ovate, coriaceous, wavy or slightly plicate along secondary veins, the apex acute or obtuse and apiculate, the base hastate, the sinuses non-overlapping, up to 30 cm long, the margins wavy, with a submarginal vein within 2 mm from the margin;mid-vein broad and conspicuous with 4-7 primary lateral veins per side;lower surface with dark spots on secondary vein angles;petioles 60-100 cm long. Two or more inflorescences subtended by brachts. Peduncles 20-45 cm long;spathe a whitish to yellowish green, oblong tube;spadix 11-32 cm, pistil 3-4 cm long and about 1.5 cm thick. Fruit a fleshy berry, red when mature, globose or ovoid (Flach and Rumawas, 1996;Wagner et al., 1999;Acevedo-Rodr’guez and Strong, 2005).