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Vigna is a genus of plants in the legume family, Fabaceae, with a pantropical distribution. [2] It includes some well-known cultivated species, including many types of beans . Some are former members of the genus Phaseolus .
Vigna vexillata is a strong twiner with fusiform, tuberous roots. Its stems are usually clothed with brownish silky hairs, or trichomes.. Its leaflets come in three, which are oval-shaped and pointed at the tip, with the terminal leaflet being 7.5–15 cm (3.0–5.9 in) long.
The flowers have a tube calyx about 1 mm long and 5 lobes about 1 mm long as well as a whitish yellow corolla, 4–7 mm long. [20] The fruit is an indehiscent pod almost globose about 2.5 cm in diameter. [20] The plant generally looks like bunched leaves arising from branched stems, which form a crown on the soil surface.
The flowers, which grow alone or in small groups [5] rather than in clusters, consist of four petals: one large wavy half-circle on the top, two tear-drop shaped petals that point inwards, and a thin, erect, curly petal sprouting from the center of the flower. Depending on the angle, the two bottom petals can appear to be a single petal that ...
Vigna luteola was first classified as Dolichos luteolus in 1771 by Nicholas von Jacquin, naming it from plants he cultivated in Vienna. In 1859, it was moved to the genus Vigna by George Bentham, classifying it as Vigna luteola. [3] The name Luteola is derived from the Latin luteus, meaning "yellow", in reference to the plant's yellow flowers. [7]
Vigna unguiculata is a member of the Vigna (peas and beans) genus. Unguiculata is Latin for "with a small claw", which reflects the small stalks on the flower petals. [ 7 ] Common names for cultivated cowpeas include black-eye pea, [ 8 ] southern pea, [ 9 ] niebe [ 10 ] (alternatively ñebbe), [ 11 ] and crowder pea. [ 12 ]
Mung bean (Vigna radiata) is a plant species of Fabaceae and is also known as green gram. [10] It is sometimes confused with black gram (Vigna mungo) for their similar morphology, though they are two different species. [11] The green gram is an annual vine with yellow flowers and fuzzy brown pods.
Vigna aconitifolia is a drought-resistant legume, commonly grown in arid and semi-arid regions of India. It is commonly called mat bean , moth bean , matki or dew bean . The pods, sprouts and protein-rich seeds of this crop are commonly consumed in India.