hibiscus, (genus Hibiscus), genus of numerous species of herbs, shrubs, and trees in the mallow family (Malvaceae) that are native to warm temperate and tropical regions. Several are cultivated as ornamentals for their showy flowers, and a number are useful as fibre plants.

A floral formula is the numeric representation of various floral structures that constitute a flower. It is used to describe a flower using some signs and symbols, so as to designate various floral parts.