Garden Dictionary Word: forma (abr. f.)
forma (abr. f.)
The rank of taxa below variety; the narrowest taxon; a plant which retains most of the characteristics of the species, but differs in some way such as flower or leaf color, size of mature plant, etc. A forma is added to the specific binomial and preceded by "f.," such as rubra in the epithet Cornus florida f. rubra.
A| B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z