Gunja (Marathi: गुंज)

Erythrina herbacea, commonly known as the Coral Bean, Cherokee Bean, Red Cardinal or Cardinal Spear, is a flowering shrub or small tree found throughout the southeastern United States and northeastern Mexico; it has also been reported from parts of Central America and, as an introduced species, from Pakistan. Various other systematic names have been used for this plant in the past, including Erythrina arborea, Erythrina hederifolia, Erythrina humilis, Erythrina rubicunda, Corallodendron herbaceum and Xyphanthus hederifolius.

Phaseolus vulgaris, the common bean, is an herbaceous annual plant domesticated independently in ancient Mesoamerica and the Andes, and now grown worldwide for its edible bean, popular both dry and as a green bean. The leaf is occasionally used as a leaf vegetable, and the straw is used for fodder. Beans, squash and maize constituted the "Three Sisters" that provided the foundation of Native American agriculture.

Botanically, the common bean is classified as a dicotyledon. Beans are a legume and thus acquire their nitrogen through an association with rhizobia, a species of nitrogen-fixing bacteria. 18.3 million tonnes of dry common beans and 6.6 million tonnes of green beans were grown worldwide in 2007.

The other major type of bean is the broad bean (Vicia faba), of which only 3.7 million tonnes were grown in 2007. The commercial production of beans is well-distributed worldwide with countries in Asia, Africa, Europe, Oceania, South and North America all among the top bean growers. Brazil and India are the largest producers of dry beans while China produces, by far, the largest quantity of green beans, almost as much as the rest of the top ten growers combined.

Erythrina ( /ˌɛrɨˈθraɪnə/) is a genus of flowering plants in the pea family, Fabaceae. It contains about 130 species, which are distributed in tropical and subtropical regions worldwide. They are trees, growing up to 30 m (98 ft) in height. The generic name is derived from the Greek word ερυθρóς (erythros), meaning "red," referring to the flower color of certain species.

The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, is a large and economically important family of flowering plants. The group is the third largest land plant family, behind only the Orchidaceae and Asteraceae, with 730 genera and over 19,400 species. The largest genera are Astragalus (over 2,400 species), Acacia (over 950 species), Indigofera (around 700 species), Crotalaria (around 700 species), and Mimosa (around 500 species).

Plants of this family are found throughout the world, growing in many different environments and climates. A number are important agricultural plants, including: Glycine max (soybean), Phaseolus (beans), Pisum sativum (pea), Cicer arietinum (chickpeas), Medicago sativa (alfalfa), Arachis hypogaea (peanut), Ceratonia siliqua (carob), and Glycyrrhiza glabra (licorice), which are among the best known members of Fabaceae.

A number of species are also weedy pests in different parts of the world, including: Cytisus scoparius (broom), Ulex europaeus (gorse), Pueraria lobata (kudzu), and a number of Lupinus species.