Aerial yam


Scientific Name

Dioscorea bulbifera L.


Other Names

Gitthe tarul (Nepali)


Life Form

Climber


Synonyms

Helmia bulbifera (L.) Kunth


Family

Dioscoreaceae



Gitthe tarul (Nepali)
Image by - Saroj Kasaju
Usages

Food - Aerial tubers are cooked and consumed. Medicine - The juice of the roots is taken to expel threadworm.


Native to

Bhutan, China, India, Myanmar, Nepal


Habitat

Mixed forest margins, river banks, valley sides at altitudes of up to 2100 m asl.


Conservation Status

Not evaluated


More Info

A fast-growing vine with aerial, potato-like bulbs, which can be toxic if consumed raw. Considered invasive in some regions. 


Plant Description

Glabrous-leafed, non-spiny, perennial climbing plant producing annual stems up to 10 m long.

Stem twining to left, glabrous, smooth.

Leaves alternate, simple, rarely pinnately compound, heart-shaped, pointed leaves with smooth margins. These alternate leaves grow 8 to 26 cm long and 2 to 26 cm wide, with a long, slender stalk.

Male flowers: solitary, ± contiguous along rachis; bract and bracteole ovate; perianth purple, lobes lanceolate; stamens 6, inserted at base of perianth, filaments nearly as long as anthers. Female flowers: staminodes 6, ca. 1/4 as long as perianth lobes.

Capsule reflexed or drooping, straw-colored, densely purplish dotted, oblong-globose, 1.5--3 cm, glabrous, base and apex rounded; wings 0.25--0.7 cm wide.


Phenology

Flowering: July – October
Fruiting: August – November