The arrow Riesenblättrige sheets (Alocasia macrorrhizos), also called giant taro or Alokasie is a species in the genus of the arrow leaves (Alocasia) from the family of aroids (Araceae).
In Spanish speaking countries (eg Cuba, but there Malanga Xanthosoma violaceum Schott morada for) the type is called malanga.
The original home is probably Indonesia, Malaysia, Philippines, Queensland, the Australian and Solomon Islands. Today, the type of species in tropical areas around the world is widespread as a cultivated plant and wild.
The arrow Riesenblättrige sheet is a large perennial herbaceous plant. Their leaves are stalked, with 3 m length and 1.90 m wide, the largest non-compound leaves of all plants, the largest compound leaves are found in the palm Raphia farinifera. The rhizomes are erect.
The Riesenblättrige arrow leaf is rounded (not flattened). As with the usual Araceae inflorescence consists of a bract and the piston.
The plant is used as food. There are mainly the starchy rhizomes and above-ground parts of the stems of the plant used. They are boiled like potatoes. They are high in minerals, vitamin A, B and C parts of plants can be eaten only cooked, for to be containing uncooked mouth and esophagus irritated very strong.
The juice of the plant is applied externally, is an effective antidote to be against the very painful swelling caused by contact with the Pacific occurring arborescent plant nettle (Urticaceae) Dendrocnide may arise gigas.
Occasionally, the species is also used as an ornamental plant in tropical gardens and as an indoor plant.
Caterpillars of the butterfly Cruria donowani (Lepidoptera: Agaristidae eat) to this kind