Q. What do you mean by Genera?
Like species the genus represents a concept. Genera (Plural) are aggregates of closely related species. There is no size requirement for a genus. Name of the genus is a substantive noun in singular number. You should always write name of the genus with capital initial letter and keep only one generic name for one kind of plant. Either underline these words or you should write them in italics. A Genus consisting of a single species is monotypic, e.g. Leimeria consisting of a single species L. Horidana, is monotypic. If a genus contains two or. more species it is polytypic. You should know that this concept has greatly simplified the classification of well-known groups like birds, mammals, snails, butterflies and other insects.