Genus Posted on November 8, 2022August 1, 2023 by Tex Norwood A subdivision of family in the classification of plants. Plants of the same genus share similarities mostly in flower characteristics and genetics. Plants in one genus usually cannot breed with plants of another genus. Related Articles: Plumeria Meanings and SymbolismGlossary: FrangipaniGlossary: Plumeria obtusaGlossary: Plumeria rubraGlossary: Plumeria alba