What is "morus nigra"

Morus \Mo"rus\, n. [L., mulberry tree. See Mulberry.] (Bot.) A genus of trees, some species of which produce edible fruit; the mulberry. See Mulberry.

Note:

Morus alba is the white mulberry, a native of India or China, the leaves of which are extensively used for feeding silkworms, for which it furnishes the chief food.

Morus multicaulis, the many-stemmed or Chinese mulberry, is only a form of white mulberry, preferred on account of its more abundant leaves.

Morus nigra, the black mulberry, produces a dark-colored fruit, of an agreeable flavor.

Morus nigra, called black mulberry or blackberry (not to be confused with the blackberries which are various species of Rubus), is a species of flowering plant in the family Moraceae, native to southwestern Asia, where it has been cultivated for so long that its precise natural range is unknown. It is known for its large number of chromosomes, as it has 154 pairs (308 individuals). Other mulberry species are sometimes confused with black mulberry, particularly black-fruited individuals of the white mulberry, but black mulberry can be distinguished by the uniformly hairy lower leaf surface.