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substantia nigra (SN) is a basal ganglia structure located in the midbrain that plays an important role in reward and movement. Substantia nigra is Latin...

1980 Chelonoidis nigra Bour, 1985 Chelonoidis elephantopus galapagoensis Obst, 1985 Geochelone nigra Pritchard, 1986 Geochelone nigra nigra Stubbs, 1989 Chelonoidis...

Juglans nigra, the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to North America. It grows...

Rhamphospermum nigrum (syns. Brassica nigra and Sinapis nigra), black mustard, is an annual plant cultivated for its dark-brown-to-black seeds, which...

Pinus nigra, the Austrian pine or black pine, is a moderately variable species of pine, occurring across Southern Europe from the Iberian Peninsula to...

Populus nigra, the black poplar, is a species of cottonwood poplar, the type species of section Aigeiros of the genus Populus, native to Europe, southwest...

The Wych Elm cultivar Ulmus glabra 'Nigra', commonly known as the Black Irish Elm, was found in the Kilkenny area c.1770 by the father of nurseryman John...

Taylor, 1916: restricted to the far northwestern coast of California A. r. nigra Taylor, 1914: restricted to a small region in southern Mendocino County...

Castelnuovo Nigra is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 40 kilometres (25 mi) north...

Sambucus nigra is a species complex of flowering plants in the family Adoxaceae native to most of Europe. Common names include elder, elderberry, black...

surface of the tongue, giving a hair-like appearance. Black tongue (lingua nigra) refers to a black discoloration of the tongue, which may or may not be...

breakdown. Older taxonomic synonyms include A. mariana, P. brevifolia, or P. nigra. Growth varies with site quality. In swamp and muskeg it shows progressively...

The Celebes crested macaque (Macaca nigra), also known as the crested black macaque, Sulawesi crested macaque, or the black ape, is an Old World monkey...

The black stork (Ciconia nigra) is a large bird in the stork family Ciconiidae. It was first described by Carl Linnaeus in the 10th edition of his Systema...

Linea nigra (Latin for "black line"), colloquially known as the pregnancy line, manifests as a linear area of heightened pigmentation frequently observed...

Synonyms Aspergillus niger var. niger Aspergillopsis nigra (Tiegh.) Speg. Rhopalocystis nigra (Tiegh.) Grove Sterigmatocystis nigra (Tiegh.) Sacc. (1877)...

Alejandro Ramos and Claudia Marsicano in 2012 and the type species is A. nigra. It shares characteristics with both rhinesuchids and lydekkerinids, making...

niger – (Linnaeus, 1758) (Eurasian black tern) C. n. surinamensis – (Gmelin, 1789) (North American black tern) Synonyms Sterna nigra Linnaeus, 1758...

Wermuth, 1955; Geochelone elephantopus abingdonii Pritchard, 1967; Geochelone nigra abingdonii Iverson, 1992; and Geochelone abingdonii Valverde, 2004. The...

Nepenthes nigra is a tropical pitcher plant known from a number of mountains across Central Sulawesi, where it grows at elevations of 1,500–2,700 m (4...