Colocasia gigantea

Colocasia gigantea, also called giant elephant ear or Indian taro, is a 1.5–3 m tall herb with a large, fibrous, inedible corm, producing at its apex a whorl of large leaves.[1] The leaf stalk is used as a vegetable in some areas in South East Asia and Japan.

"Bac ha" redirects here. For the north Vietnamese district, see Bắc Hà District.

Colocasia gigantea
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Araceae
Genus: Colocasia
Species:
C. gigantea
Binomial name
Colocasia gigantea
(Blume ex Hassk.) Hook.f.

Known as dọc mùng[2][3][4] in Vietnam (bạc hà in some provinces in southern Vietnam), it is often used in canh chua and bún (rice vermicelli soup).

In Japanese, it is called hasu-imo[5] (literally, "lotus yam") in general and ryukyu in Kōchi Prefecture as it is originated in Ryukyu Kingdom. It is sometimes used as an ingredient of miso soup, chanpurū and sushi. A Japanese term zuiki means the leaf stalk of both C. gigantea and C. esculenta. Higo-zuiki, made of a dried stalk and produced solely in Kumamoto Prefecture (or Higo Province), is a sex toy with a history of several hundred years, containing saponin which is considered to affect sexual pleasure.

Colocasia gigantea is close to Alocasia macrorrhizos and is thought to be produced from natural crossing between A. macrorrhizos and C. esculenta.[6]

References
  1. Anton Ivancic et al. Thermogenesis and flowering biology of Colocasia gigantea, Araceae Archived 2013-10-29 at the Wayback Machine J Plant Res (2008) 121:73–82.
  2. Nguyen Thi Ngoc Hue 'Taro diversity and use in Vietnam'. Ethnobotany and genetic diversity of Asian taro: focus on China
  3. Loài Dọc mùng Tri thức việt - Vietgle.
  4. MATSUDA M and NAWATA E "Taro in Northern Vietnam : Its Uses, Cultivation, and Genetic Variation" Japanese Journal of Tropical Agriculture, VOL.46;NO.4;PAGE.247-258(2002)
  5. Nguyen Thi Ngoc Hue 'Taro diversity and use in Vietnam' Ethnobotany and genetic diversity of Asian taro: focus on China
  6. The Global Diversity of Taro Ethnobotany and Conservation Bioversity International


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