noun: a general kind of something ("Ignore the genus communism")
noun: (biology) taxonomic group containing one or more species
Schauberger
Crude oils belong to the genus of physical manifestations that are incapable of reproduction. They are formations that missed their way on evolution's developmental path and rightly belong to the genus of mules, in which connection the donkey is also known to have made a mess of the normal progress of development. Seen from this angle, distilled crude oil is to be considered as a kind of super-mule, produced by humans who think they can cleverly outsmart Nature. [The Energy Evolution - Harnessing Free Energy from Nature, The Liquefaction of Coal by Means of Cold Flows]
R. A. Schwaller de Lubicz
"In fact, each of these individual members of the vegetable kingdom belongs to a genus, and this genus to a family; and these families belong to an original "lineage." At the head of this lineage is a Neter, a "Principle" synthesizing all the characteristics of this lineage; its number, its rhythm, its classification in the general harmony." [R. A. Schwaller de Lubicz, The Temple in Man, page 63]