Genus is the unit of classification which is higher than species but lower to the family in the hierarchy.
Genus is a group of different species which are similar in reproductive characters but dissimilar in vegetative characters.
The individual members of species like elastica (rubber), religiosa (peepal) and benghalensis (banyan) are included under a common genus Ficus.
Sometimes, genus having only one species is called as Monotypic genus. E.g. Mangifera indica.
