A species (Heteropogon contortus) of tangleheads, a tropical, perennial grass.

(simile) Very black (especially of a mood, a frown, etc.).

Any of numerous species of dark-coloured mosses (Bryophyta), possibly species of the genera Grimmia, Andreaea, Syntrichia, Cinclidotus.

Juglans nigra, a tree native to eastern North America. / The nuts of the aforementioned tree. / The wood of the aforementioned species.

Prunus serotina

Salix nigra, native to much of the eastern United States, excluding Florida, and to parts of California and Arizona.

Sideroxylon lanuginosum, also native to Mexico. / Viburnum lentago. / Viburnum prunifolium. / Viburnum rufidulum (rusty blackhaw).

Aronia melanocarpa, native to temperate and cool eastern North America.

Fraxinus nigra, a species of ash tree native to much of eastern Canada and the northeastern United States. / Acer negundo, a North American maple. / Eucalyptus sieberi, an Australian tree.

The companion of Saint Nicholas in Dutch folklore, depicted as a blackamoor.