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).

A leaf spot disease of banana plants, caused by the ascomycete fungus Mycosphaerella fijiensis (anamorph: Pseudocercospora fijiensis).

plural of black aurora Alternative form of black aurorae

plural of black aurora Alternative form of black auroras

A structure that is embedded in a uniformly bright aurora, where its optical emission is significantly reduced, presenting as either patches or arcs that mainly drift eastwards.

(geology, oceanography) A kind of hydrothermal vent found on the seabed, emitting clouds of black material. / Used other than figuratively or idiomatically: see black, smoker.

plural of black smoker

plural of black marketeer

plural of black light