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Form (biology)

From Biocrawler, the free encyclopedia.

In biology a form is a taxonomic subdivision of a species, below the level of a subspecies or variety. The trinomial nomenclature notation is: Genusname speciesname forma formname.

For example a cactus:

  • Acanthocalycium spiniflorum forma klimpelianum (Weidlich & Werderm.) Donald

Forms are extensively used to describe subgroupings of plants; they are not used in the taxonomy of animals.

Some botanists believe that there is no need to name forms, since there are theoretically countless numbers of forms based on a single-gene difference.

Wikipedia (http://en.wikipedia.org/wiki/Main_Page) Form_(biology) (http://en.wikipedia.org/wiki/Form_(biology)) version history (http://en.wikipedia.org/w/index.php?title=Form_(biology)&action=history) GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License) CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)

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