Cissus hastata Miq.

Cissus hastata Miq.




Vitis hastata (Miq.) Miq.

Vernacular Names

Malaysia Akar asam riang, akar iang-iang, akar kerayong.
Thailand Thao som op, som khaao (Peninsular), som sandaan (South-eastern).
Vietnam h[oof] d[awf]ng m[ux]i gi[os]o.

Geographical Distributions

From India to Indo-China, Thailand, throughout South-east Asia to the east coast of Australia.


Cissus hastata is an evergreen climber with quadrangular stems, winged margins, pale bluish-green, hairy when young, unicellular hairs, 2-armed and unbranched or bifid tendrils.

The leaves are simple, ovate to broadly ovate in shape, with a size of measuring 7-11.5 cm x 5.5-10.5 cm and often reddish on the lower surface when young. The base is cordate, acute to acuminate apex and serrulate margins. The petiole is 1.5-4 cm long, triangular stipules, up to measure 2.5 mm long and borne at right angles to the stem.

The inflorescence is umbellate, measuring 2-3.5 cm long, with 3 primary branches and pubescent. The peduncle is measure 0.5-1.2 cm long, hairs at both 2-armed and uniseriate. The pedicel is straight or curved, measuring 1.5-2 mm long petal and white to yellowish in colour.

The black berry is an ovoid in shape, measuring  6-7 mm x 4-6 mm and it is 1-seeded.

The seed is pear-shaped, measure 4-4.5 mm long while the endosperm in transverse section appears almost twice and divided by the endotesta. The cotyledons are dissimilar.


Ecology / Cultivation

C. hastata occurs along forest margins, usually cascading over trees, from sea-level up to 700 m altitude, on most soil types.


Line Drawing / Photograph



    1. Plant Resources of South-East Asia No. 12 (2): Medicinal and poisonous plants.