Alocasia odora (G.Lodd.) Spach

First published in Hist. Nat. Vég. 12: 46 (1846)
This species is accepted
The native range of this species is E. India to S. Japan and Borneo. It is a subshrub or shrub and grows primarily in the wet tropical biome.


CATE Araceae, 17 Dec 2011.

General Description
Pachycaul herbs, massive, to 2.5m, evergreen, with slightly milky latex. Stem erect to decumbent, with short stolons terminating in tubercles arising from base. Leaves several to rather many together, clustered at tips of stems of larger plants; petiole up to 1.5m, sheath membranous; leaf blade peltate, cordate-sagittate or cordate-ovate, up to 130 × 100cm, basal margins undulate, apex shortly acuminate; primary lateral veins 9–12 on each side, interprimary veins forming well defined interprimary collective veins. Inflorescences 2 or 3 together among leaf bases, subtended by membranous cataphylls; peduncle stout, ca. 35 cm, exceeding cataphylls at anthesis. Spathe 13–25cm, constricted ca. 1/6 of way from base; proximal part green, ovoid; limb cowl-like at anthesis, later reflexed, then deliquescent, greenish white, broadly oblonglanceolate, 10–30 × 4–8cm, membranous. Spadix shorter than spathe, shortly stipitate; female zone 1–2 × ca. 1.5cm; pistil pale green, ca. 3 mm in diam.; stigma sessile, weakly 3-lobed, lobes blunt, pale green; sterile zone equaling male zone, ivory, very slightly narrowed corresponding to spathe constriction; synandrodes rhombic-hexagonal, ca. 2.5mm in diam.; male zone whitish, cylindric, 3–5 × ca. 2cm; synandria rhombichexagonal, convex-topped due to cap-forming synconnective, ca. 1.5 mm in diam.; appendix white, narrowly conic, 3–5.5 × 1–2cm, equaling ca. 1/3 length of spadix, markedly thicker than male zone at base, slowly tapering toward apex. Fruiting spathe ca. 6cm. Fruit ripening scarlet, globose, ca. 1cm in diam.
Primary and secondary tropical rain forests, bamboo thickets, riverbanks, swamps, also on limestone.
hai yu

IUCN Red List of Threatened Species

LC - least concern

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E.

Predicted extinction risk: not threatened. Confidence: confident


The rhizomes are used for treating stomach aches, abdominal pains, cholera, and hernias, and are used externally to treat abscesses and snake and insect bites.


  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
  • CATE Araceae

    • Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.
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