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.



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