Form (botany)

In botanical nomenclature, a form (forma, plural formae) is one of the "secondary" taxonomic ranks, below that of variety, which in turn is below that of species; it is an infraspecific taxon.[1] If more than three ranks are listed in describing a taxon, the "classification" is being specified, but only three parts make up the "name" of the taxon: a genus name, a specific epithet, and an infraspecific epithet.

The abbreviation "f." or the full "forma" should be put before the infraspecific epithet to indicate the rank. It is not italicised.

For example:

  • Acanthocalycium spiniflorum f. klimpelianum or
    • Acanthocalycium spiniflorum forma klimpelianum (Weidlich & Werderm.) Donald
  • Crataegus aestivalis (Walter) Torr. & A.Gray var. cerasoides Sarg. f. luculenta Sarg. is a classification of a plant whose name is:
    • Crataegus aestivalis (Walter) Torr. & A.Gray f. luculenta Sarg.

A form usually designates a group with a noticeable morphological deviation. The usual taxonomic practice is that the individuals classified within the form are not necessarily known to be closely related (they may not form a clade).[2] For instance, white-flowered plants of species that usually have coloured flowers can be grouped and named (e.g., as "f. alba"). Formae apomicticae are sometimes named among plants that reproduce asexually, by apomixis. There are theoretically countless numbers of forms based on minor genetic differences, and only a few that have particular significance are likely to be named.

Abies procera 'Glauca' - 20101120-02
Seedlings of Abies procera sometimes arise that have attractive silvery-blue foliage. The name Abies procera Rehder forma glauca (Ravenscr.) Rehder has been created for these. However, if the plants are selectively propagated for the horticulture trade, a cultivar name is generally used instead.

See also

References

  1. ^ McNeill, J.; Barrie, F.R.; Buck, W.R.; Demoulin, V.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Marhold, K.; Prado, J.; Prud'homme Van Reine, W.F.; Smith, G.F.; Wiersema, J.H.; Turland, N.J. (2012). International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Regnum Vegetabile 154. A.R.G. Gantner Verlag KG. ISBN 978-3-87429-425-6. Chapter I. Article 4
  2. ^ Hamilton, C.W.; Reichard, S.H. (1992), "Current Practice in the Use of Subspecies, Variety, and Forma in the Classification of Wild Plants", Taxon, 41 (3): 485–498, doi:10.2307/1222819, JSTOR 1222819
Botany (New Zealand electorate)

Botany is a New Zealand parliamentary electorate, returning one Member of Parliament to the New Zealand House of Representatives. It was contested for the first time at the 2008 general election, and won by Pansy Wong for the National Party. Following Wong's resignation in late 2010, a by-election returned Jami-Lee Ross, who was confirmed by the voters in the 2011 general election. Ross left the National Party in October 2018 and became an independent.

Botany Bay Plantation Wildlife Management Area

Botany Bay Plantation Heritage Preserve/Wildlife Management Area is a state preserve on Edisto Island, South Carolina.

Botany Bay Plantation was formed in the 1930s from the merger of the Colonial-era Sea Cloud Plantation and Bleak Hall Plantation. In 1977, it was bequeathed to the state as a wildlife preserve; it was opened to the public in 2008.

The preserve includes a number of registered historic sites, including two listed in the National Register of Historic Places: a set of three surviving 1840s outbuildings from Bleak Hall Plantation, and the prehistoric Fig Island shell rings.

Form

Form is the shape, visual appearance, or configuration of an object. In a wider sense, the form is the way something is or happens.

Form may also refer to:

Form (document), a document (printed or electronic) with spaces in which to write or enter data

Form (education), a class, set or group of students

Form (religion), an academic term for prescriptions or norms on religious practice

Form, a shallow depression or flattened nest of grass used by a hare

Form, or rap sheet, slang for a criminal record

Form (zoology)

This article is not about formal zoological nomenclature; it describes terms that are sometimes used, but that have no standing under the ICZN.In zoology, the word "form" or forma (literally Latin for form) is a strictly informal term that is sometimes used to describe organisms. Under the International Code of Zoological Nomenclature the term has no standing (it is not accepted). In other words, although form names are Latin, and are sometimes wrongly appended to a binomial name, in a zoological context, forms have no taxonomic significance at all.

Forma

Forma is a Latin and Italian word meaning "form, shape, appearance".

Both the Latin forma and the English form are used interchangeably as informal terms in biology:

Form (zoology)

Form (botany)

Plant variety

Plant variety may refer to

Variety (botany), a taxonomic nomenclature rank in botany, below subspecies, but above subvariety and form

Plant variety (law), a non-taxonomic, exclusively legal term

An informal and ambiguous substitute for form (botany) (a taxonomic nomenclature rank in botany, below variety (botany))

An older substitute for cultivar or hybrid (biology), now discouraged by the International Code of Nomenclature for Cultivated Plants. It is still used especially with regard to grapes and rice.

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