Family: Dioscoreaceae
Taxonomy: Plantae > Tracheophyta > Liliopsida > Dioscoreales > Dioscoreaceae > Dioscorea > Dioscorea alata L.
Common name [English]: Purple yam, Asiatic yam, greater yam
Vernacular name [Malayalam]: കാച്ചിൽ, കാവുത്ത്
Habitat: Edges or gaps of rainforests and woodlands.
Description: Tubers one to several, polymorphic, variously branched or lobed. Stem twining to right, 4-5-winged; wings sometimes reduced to ribs. Bulbils globose, ovoid or obpyriform, occasionally with rootlets. Leaves opposite or rarely subopposite, 7-18 x 4-10 cm, broadly ovate or deltoid-ovate, base cordate or subsagittate, apex acuminate, primary veins 7; petiole to 8 cm long, winged. Male Spike on axillary branchlets, paniculate; rachis winged. Flowers c. 1.5 mm long; bracts to 1 mm long, deltoid-ovate; tepals 1-1.5 mm long, widely ovate, obtuse; stamens 6, free; pistillode conical. Female spike solitary in axils, axis 10-20 cm long. Flowers laxly arranged, sessile; bracts 1-1.5 mm long, ovate; tepals fleshy, c. 1 mm long, broadly ovate; staminodes 6, very small; ovary c. 3 mm long. Capsule 2-2.5 mm long, broadly obcordate.
Flowering and Fruiting: Flower blooms during July to October. Fruit ripes during November to December
Uses: Food ,Medicine in Ayurveda, Folk medicine, Siddha, Traditional and chinese medicine.
Cultivation: Cultivated
References
http://www.plantsoftheworldonline.org
https://indiabiodiversity.org