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'''''Tanacetum''''' is a genus of about 70 species of [[flowering plant]] in the family [[Asteraceae]], native to temperate regions of the [[Northern Hemisphere]].{{Fact|date=June 2008}}
Common names include [[Tansy]] (''Tanacetum vulgare''; sometimes called Common Tansy or Garden Tansy) and [[Feverfew]] (''Tanacetum parthenium''); several other species are also known as tansies. Other common names include Bachelor's Buttons, Bitter Buttons, Boerenwormkruid, Buttons, Ginger Plant, Gold-buttons, Ponso, Solucanotu, Tanaceto, Tansy, Yomogi-Giku.{{Fact|date=June 2008}}
The name ''tansy'' is also sometimes given, improperly, (e.g. in the western [[United States]]) to [[Senecio jacobaea|ragwort]], because in those areas ragwort is known as "tansy ragwort".{{Fact|date=June 2008}}
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Pyrethrum (a name used from the time of Dioscorides, the derivation from the Greek, much fire, referring to the acrid roots). Compositae. This name is still commonly used in garden literature and language although the genus has long been reduced to a section of Chrysanthemum. Almost every nursery catalogue offers P. roseum and its numerous varieties, which is referred by botanists to Chrysanthemum coccineum; also P. parthenifolium var. aureum, the golden feather, and P. uliginosum. (See Vol. II, p. 753.) All three of these are rather common in gardens and they are known to most lovers of hardy perennials. More recent introductions under the name Pyrethrum are P. Tchihatchewii, also spelled Tchihatcheffii, the "turfing daisy" (see Chrysanthemum Tchihatchewii, Vol. II, p. 756), and P. leucopiloides, Hausskn., a sub-alpine perennial with silvery white leaves and large yellow flower-heads. Asia Minor. Suitable for the rockery. This last species is not mentioned under Chrysanthemum.
Pyrethrum (a name used from the time of Dioscorides, the derivation from the Greek, much fire, referring to the acrid roots). Compositae. This name is still commonly used in garden literature and language although the genus has long been reduced to a section of Chrysanthemum. Almost every nursery catalogue offers P. roseum and its numerous varieties, which is referred by botanists to Chrysanthemum coccineum; also P. parthenifolium var. aureum, the golden feather, and P. uliginosum. (See Vol. II, p. 753.) All three of these are rather common in gardens and they are known to most lovers of hardy perennials. More recent introductions under the name Pyrethrum are P. Tchihatchewii, also spelled Tchihatcheffii, the "turfing daisy" (see Chrysanthemum Tchihatchewii, Vol. II, p. 756), and P. leucopiloides, Hausskn., a sub-alpine perennial with silvery white leaves and large yellow flower-heads. Asia Minor. Suitable for the rockery. This last species is not mentioned under Chrysanthemum.
==Species==
==Species==
<!-- This section should be renamed Cultivars if it appears on a page for a species (rather than genus), or perhaps Varieties if there is a mix of cultivars, species, hybrids, etc -->
Selected species:
''[[Tanacetum abrotanifolium]]'' (L.) Druce<br/>
''[[Tanacetum achilleifolium]]'' (M. Bieb.) Sch. Bip.<br/>
''[[Tanacetum argenteum]]'' (Lam.) Willd.<br/>
''[[Tanacetum atkinsonii]]'' (C.B.Clarke) Kitam.<br/>
''[[Tanacetum balsamita]]'' L.<br/>
''[[Tanacetum bipinnatum]]'' (L.) Sch. Bip.<br/>
''[[Tanacetum camphoratum]]'' Less.<br/>
''[[Tanacetum cinerariifolium]]'' (Trevir.) Sch. Bip.<br/>
''[[Tanacetum coccineum]]'' (Willd.) Grierson<br/>
''[[Tanacetum corymbosum]]'' (L.) Sch. Bip.<br/>
''[[Tanacetum densum]]'' (Labill.) Sch. Bip.<br/>
''[[Tanacetum ferulaceum]]'' (Sch. Bip.) Walp.<br/>
''[[Tanacetum haradjanii]]'' (Rech. f.) Grierson<br/>
''[[Tanacetum huronense]]'' Nutt.<br/>
''[[Tanacetum macrophyllum]]'' (Waldst. & Kit.) Sch. Bip.<br/>
''[[ Tanacetum microphyllum]]'' DC.<br/>
''[[Tanacetum parthenifolium]]'' (Willd.) Sch. Bip.<br/>
''[[Tanacetum parthenium]]'' (L.) Sch. Bip.<br/>
''[[Tanacetum poteriifolium]]'' (Nordm.) Grierson<br/>
''[[Tanacetum praeteritium]]'' (Horw.) Heywood<br/>
''[[Tanacetum ptarmiciflorum]]'' (Webb) Sch. Bip.<br/>
''[[Tanacetum vulgare]]'' L.<br/>
Sources: E+M<ref name="EUROMED"/> NRCS,<ref name="NRCS">{{NRCS Plants Profile
| name = Tanacetum (with a T)
| symbol = TANAC
| accessdate = 2008-06-28
}}</ref> GRIN<ref name="GRIN"/>
==Gallery==
==Gallery==
