Cissampelos pareira
Cissampelos pareira (velvetleaf) is a species of flowering plant in the family Menispermaceae. Morphology. It is a slender tomentose climber. The leaves are peltate, 2.5–12 cm long, 2.5–11.5 cm broad, triangularly broad-ovate, or orbicular, obtuse, mucronate, base cordate or truncate, ± tomentose on both sides; petiole pubescent. Flowers are small in size, pedicels filiform. Male flowers clustered in the axil of a small leaf; sepals are 4 in number, obovate-oblong, hairy outside; petals 4 in number, united to form a 4-toothed cup, hairy outside; stamens 4, column short, anthers connate, encircling the top of the  column. Female flowers clustered in the axils of orbicular, hoary imbricate bracts, on 5–10 cm long racemes; sepal 1, petal 1; carpel 1, densely hairy; style shortly 3-fid. Drupe 4–6 mm long, 3–4 mm broad, subglobose, compressed, hairy-pubescent, red when fresh, black when dry, endocarp transversely ribbed, tuberculate. Seeds are horseshoe-shaped. Medicinal uses. "Cissampelos pareira" is used in Chinese herbology, where it is called "xí shēng téng" () or "yà hū nú" (). The species is also known as "abuta" and called "laghu patha" in Ayurvedic medicine. In Tamil Nadu it is called "ponmusutai" and it is used for  a number of medicinal purposes. Some attention has been paid to it in Kenya, Tanzania, and other places for its purported antimalarial properties in particular, as well as in India for its antiviral properties, especially against Dengue virus.