Meaning of GENUS in English
( n. )
An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name. A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera. In proportion as its definition is exact, it is natural genus; if its definition can not be made clear, it is more or less an artificial genus.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012