Vernacular
  • Arum d'Egypte,
  • Chinese potato,
  • Chou caraïbe,
  • Cocoyam,
  • Dasheen,
  • Elephant's ear,
  • Taro,
  • Taro,
  • Wild taro
Details
Eppo_code

CXSES

Family

Araceae

Species

Colocasia esculenta (L.) Schott

Meaning_of_the_name

esculenta - edible

Global_description

C. esculenta is a perennial, herbaceous rodless plant. Roots are large, underground tuberous rhizome. Leaves have a long thick and fleshy petiole, longer than the lamina, up to 85 cm long, sheathing at the base. The lamina is large, triangular or arrow head, completely smooth surface and very hydrophobic. Flowers are pale yellow to yellow-orange, arranged in spike inside a spathaceous envelope.

Similar_species
Cotyledons
First_leaves

First leaves are from the rhizomes, they are carried by a long fleshy petiole, sheathing in the basal part. The blade is generally triangular or sagittate, cordate at base, longer than wide, shortly acuminate at the top.

Habit

C. esculanta is an erect perennial plant, grows up 1,5 m height. Cut leaves produce a transparent latex. It rarely flowers.

Underground_system

The roots are large tuberous rhizome and stolon with long internodes.

Stem
Leaves

Leaves are simple. They grow in clumps from underground rhizomes. The petiole is longer than the lamina, up to 85 cm in length. It is fleshy, thick, drainage pipe shaped, glabrous, green or tinged with purple or dark purple. The lower third laeve is sheathing. Blade is large 80 cm long and 50 cm wide. The base is sagittate or peltate and the apex is acute. The lamina is green or purple-stained, entire margin. Main venation is palmate, trinerved at the base. The terminal vein has 3-6 pairs of main lateral veins.

Inflorescence

Inflorescence supported by a stalk standing vertically, up to 50 cm in length. It consists of a long spathe erect, membranous, including a basal wound, long 4 to 5 cm.

Flowers

Flowers are pale yellow to yellow-orange, 19 to 25 cm long and 2, 5 cm wide, oblong, deciduous. Inside the spathe is a long spadix 11-14 cm. At the base of the spadix, there are female flowers at 3.5 to 4.5 cm, reduced to one ovary obovate, unilocular 2.8 mm long, mixed with white staminodes cylindrical. The middle part of the spadix is sterile to a height of 1 cm. Above, a height of 4 to 4.5 cm, there are male flowers.

Fruits

Fruits are small, bay with many seeds, the development in nature is very rare.

Seeds
Biology

C. esculenta is a perennial plant that propagates by vegetative spread (rhizomes and stolons). It rarely produce seeds.

Ecology

It prefers loose soil and rock in moist places and hot areas.

Origine

Native to tropical Asia.

World_distribution
South_african_distribution
Knp_distribution
Use

It is locally cultivated for its edible tubers and leaves and used as ornament.

Global_weediness

It infests wet and cool places. It becomes a large population in areas where the soil is constantly waterlogged.

South_african_weediness
Knp_weediness

Invasive species with low ecological impact.

Global_control
Control_knp

Can be controlled by cultivation.

References

(A revised list of alien plants for the Kruger National Park.Koedoe) Foxcroft, L.C., Henderson, L., Nichols, G.R., Martin, B.W. (AdventOI) Le Bourgeois, T., Carrara, A., Dodet, M., Dogley, W., Gaungoo, A., Grard, P., Ibrahim, Y., Jeuffrault, E., Lebreton, G., Poilecot, P., Prosperi, J., Randriamampianina, J.A., Andrianaivo A.P., and Théveny, F. (2008).

Web_links

http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=11204 http://idao.cirad.fr/SpecieSheet?sheet=adventoi/especes/c/cxses/cxses_fr.html

Vernacular Country Language Source
Cocoyam English EPPO
Arum d'Egypte French EPPO
Chinese potato English EPPO
Wild taro English EPPO
Taro France French EPPO
Elephant's ear English Foxcroft, 2003
Dasheen English EPPO
Taro English EPPO
Chou caraïbe French EPPO
Map