morus nigra(n = noun.plant) black mulberry - European mulberry having dark foliage and fruit;
is a kind of mulberry, mulberry tree

ballota nigra, betula nigra, brassica nigra, centaurea nigra, ciconia nigra, dalbergia nigra, fraxinus nigra, genus morus, juglans nigra, melanitta nigra, morus, morus alba, morus rubra, nigra, phyllostachys nigra, pinus nigra, populus nigra, populus nigra italica, prunus nigra, quercus nigra, salix nigra, sambucus nigra, substantia nigra