P. nigra
# P. nigra

P. nigra may refer to:

## Animals

* Penelopina nigra, the Highland guan, a bird species
* Petrotilapia nigra, a fish species
* Phelsuma v-nigra v-nigra, a small diurnal subspecies of geckos
* Phylidonyris nigra, a bird species that inhabits the east coast and the south-west corner of Australia
* Pomarea nigra, the Tahiti monarch, a bird species
* Porzana nigra, an extinct bird species

## Plants

* Phyllostachys nigra, a bamboo species
* Pinus nigra, a variable species of pine, occurring across southern Europe from Spain to the Crimea, and also in Asia Minor, Cyprus and locally in the Atlas Mountains of northwest Africa
* Populus nigra, the black poplar, a tree species
* Prosopis nigra, a South American leguminous tree species that inhabits the Gran Chaco ecoregion in Argentina and Paraguay
* Prunus nigra, a tree species native to eastern North America from New Brunswick west to southeastern Manitoba and south to Connecticut across to Iowa
