Form botanical

In Botanical and Mycology, the form (of Latin formed , often shortened in “ fo. ” or “ f. ”) is an entity or Taxon of row lower than the Espèce and the variety.

Aspect taxinomic

The form being the smallest taxinomic cut in the Systematic and the Classification of the alive world, nearest to “ the individu ” in presence.

For example, when we say that we have in our plate the “ form blanche ” of the Cultivated mushroom , we make same division empirically as the mycologist who named it by the trinomial Agaricus bisporus fo. alba .

More still than the varietal row, the choice of the formal row indicates that the population of individuals thus circumscribed does not differ from the species “ type ” that by one or more characters considered minor on a plan taxinomic (morphological characteristic , ecological, Organoleptique, etc), as the “ color blanche ” in our example.

Aspect nomenclatural

The first time that a species is seen allotting a division to the row of form, there is reciprocally and automatically creation of a autonomous form to indicate the species of which it separate in a strict sense ( Strictly speaking ), was now regarded as the “ form standard, ” indicated by the trinomial : Agaricus bisporus fo. bisporus .

Others rows taxinomic

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