The Moraceae or mulberry family takes its name from genus Morus, an epithet derived from the Latin morum for a mulberry. It is a family with about 40 genera and 1000 species mainly concentrated in tropical and subtropical regions. The best known of its members is Ficus, the genus commonly referred to as figs or banyans. Breadfruit is another familiar member. Most are trees and shrubs, and nearly all have milky sap. The leaves are simple and mostly alternate. The flowers are minute and usually densely aggregated. In Ficus, the receptacle is spherical with a single opening at the distal end, and the interior of what appears to be a fruit contains hundreds of tiny unisexual flowers. Well-known species of Ficus include carica (the edible fig), benghalensis (Bengal fig), elastica (rubber tree), microcarpa (the Indian laurel), pumila (creeping fig) and several species known collectively as strangler figs.