is
Gorilla gorilla gorilla. In
zoological nomenclature, a
trinomen (), trinominal name, or ternary name is the name of a
subspecies. A trinomen is a name with three parts:
generic name,
specific name and
subspecific name. The first two parts alone form the
binomen or
species name. All three names are typeset in italics, and only the first letter of the generic name is capitalised. No indicator of rank is included: in
zoology, subspecies is the only rank below that of species. For example: "
Buteo jamaicensis borealis is one of the subspecies of the
red-tailed hawk (
Buteo jamaicensis)." Examples include
Gorilla gorilla gorilla (
Savage and
Wyman, 1847) for the
western lowland gorilla and
Gorilla gorilla diehli (
Matschie, 1903) for the
Cross River gorilla (which are subspecies of
Gorilla gorilla, the
western gorilla);
Bison bison bison (
Linnaeus, 1758) for the
plains bison and
Bison bison athabascae (Rhoads, 1898) for the
wood bison (which are subspecies of
Bison bison, the
American bison). In a
taxonomic publication, a name is incomplete without an author citation and publication details. This indicates who published the name, in what publication, and the date of the publication. For example: "
Phalacrocorax carbo novaehollandiae (Stephens, 1826)" denotes a subspecies of the
great cormorant (
Phalacrocorax carbo) introduced by
James Francis Stephens in 1826 under the subspecies name
novaehollandiae ("of
New Holland"). If the generic and specific name have already been mentioned in the same paragraph, they are often abbreviated to initial letters. For example, one might write: "The great cormorant
Phalacrocorax carbo has a distinct subspecies in
Australasia, the black shag
P. c. novaehollandiae". While binomial nomenclature came into being and immediately gained widespread acceptance in the mid-18th century, it was not until the early 20th century that the current unified standard of nomenclature was agreed upon. This became the standard mainly because of tireless promotion by
Elliott Coues – even though trinomina in the modern usage were pioneered in 1828 by
Carl Friedrich Bruch and around 1850 were widely used especially by
Hermann Schlegel and
John Cassin. As late as the 1930s, the use of trinomina was not fully established in all fields of zoology. Thus, when referring especially European works of the preceding era, the nomenclature used is usually not in accord with contemporary standards. ==In botany==