Forma specialis

	Email		Print
	Bookmark		Link

Forma specialis

Forma specialis (plural formae speciales) is a taxonomic

Taxonomy

Taxonomy is the practice and science of classification. The word comes from the Greek language ', taxis and ', nomos .Taxonomies, or taxonomic schemes, are composed of taxonomic units known as taxa , or kinds of things that are arranged frequently in a hierarchical structure....
grouping allowed by the International Code of Botanical Nomenclature

International Code of Botanical Nomenclature

The International Code of Botanical Nomenclature is the set of rules and recommendations dealing with the formal botanical names that are given to plants....
, that is applied to a parasite (most frequently a fungus) which is adapted to a specific host (there being minimal or no morphological differences); this classification may be applied by authors who do not feel that a subspeces or variety name is appropriate. An example is Puccinia graminis
Stem rust

The stem, black or cereal rusts are caused by the fungus Puccinia graminis and are a significant disease affecting cereal crops....
.

Forma specialis is abbreviated f.

Discussion

Ask a question about 'Forma specialis'

Start a new discussion about 'Forma specialis'

Answer questions from other users

Full Discussion Forum

Encyclopedia

Forma specialis (plural formae speciales) is a taxonomic
Taxonomy

Taxonomy is the practice and science of classification. The word comes from the Greek language ', taxis and ', nomos .Taxonomies, or taxonomic schemes, are composed of taxonomic units known as taxa , or kinds of things that are arranged frequently in a hierarchical structure....
grouping allowed by the International Code of Botanical Nomenclature
International Code of Botanical Nomenclature

The International Code of Botanical Nomenclature is the set of rules and recommendations dealing with the formal botanical names that are given to plants....
, that is applied to a parasite (most frequently a fungus) which is adapted to a specific host (there being minimal or no morphological differences); this classification may be applied by authors who do not feel that a subspeces or variety name is appropriate. An example is Puccinia graminis
Stem rust

The stem, black or cereal rusts are caused by the fungus Puccinia graminis and are a significant disease affecting cereal crops....
.

Forma specialis is abbreviated f. sp.,
formae speciales is abbreviated ff. spp..

See also

Phytopathology
Phytopathology

For the journal, see Plant Pathology .Plant pathology is the scientific study of plant diseases caused by pathogens and environmental conditions ....
Pathovar
Pathovar

A pathovar is a bacterial strain or set of strains with the same or similar characteristics, that is differentiated at infrasubspecific level from other strains of the same species or subspecies on the basis of distinctive pathogenicity to one or more plant hosts....