Tanacetum is a genus of about 160 species of flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

 in the family Asteraceae

Asteraceae

The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...

, native to many regions of the Northern Hemisphere

Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

.
Common names include Tansy

Tansy

Tansy is a perennial, herbaceous flowering plant of the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world and in some areas has become invasive...

 (Tanacetum vulgare; sometimes called Common Tansy or Garden Tansy), Costmary (Tanacetum balsamita), and Feverfew

Feverfew

Feverfew is a traditional medicinal herb which is found in many old gardens, and is also occasionally grown for ornament. The plant grows into a small bush up to around high, with citrus-scented leaves and is covered by flowers reminiscent of daisies...

 (Tanacetum parthenium); several other species are also known as tansies.

Tanacetum species are used as food plants by the larva

Larva

A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

e of some Lepidoptera

Lepidoptera

Lepidoptera is a large order of insects that includes moths and butterflies . It is one of the most widespread and widely recognizable insect orders in the world, encompassing moths and the three superfamilies of butterflies, skipper butterflies, and moth-butterflies...

 species including Bordered Pug

Bordered Pug

The Bordered Pug is a moth of the family Geometridae. It is found across the Palearctic region and the Near East....

, Grey Pug

Grey Pug

The Grey Pug is a moth of the family Geometridae. It is found throughout the Palearctic region and the Near East.The forewings of this species are grey marked with pale fascia and radial lines which give it a mottled appearance. The hindwings are much paler and plainer. Melanism is quite common in...

, Lime-speck Pug

Lime-speck Pug

The Lime-speck Pug is a moth of the family Geometridae. It is a common species throughout the Palearctic region, the Near East and North Africa....

, Tawny Speckled Pug

Tawny Speckled Pug

The Tawny Speckled Pug is a moth of the family Geometridae. It is found throughout the Palearctic region, the Near East and North Africa....

, Wormwood Pug

Wormwood Pug

The Wormwood Pug is a moth of the family Geometridae. It is a common species across the Palearctic region and the Near East, as well as North America....

 and the Coleophora

Coleophora

Coleophora is a very large genus of moths of the family Coleophoridae. It contains some 1,350 described species. The genus is represented on all continents, but the majority are found in the Nearctic and Palaearctic regions...

case-bearers C. chrysanthemi (feeds exclusively on T. corymbosum), C. tanaceti (feeds exclusively on T. vulgare) and C. trochilella.

Selected species

Tanacetum abrotanifolium (L.) Druce

Tanacetum achilleifolium (M. Bieb.) Sch. Bip.

Tanacetum argenteum (Lam.) Willd.

Tanacetum atkinsonii (C.B.Clarke) Kitam.

Tanacetum balsamita

Tanacetum balsamita

Tanacetum balsamita, or Balsamita vulgaris, is a perennial temperate herb known as costmary, alecost, balsam herb, bible leaf, or mint geranium....

L.

Tanacetum bipinnatum (L.) Sch. Bip.

Tanacetum camphoratum

Tanacetum camphoratum

Tanacetum camphoratum is a species of flowering plant in the aster family known by the common names camphor tansy and dune tansy. It is native to the Pacific Coast of North America from British Columbia to California, where it grows in sand dunes and other coastline habitat...

Less.

Tanacetum cinerariifolium (Trevir.) Sch. Bip.

Tanacetum coccineum (Willd.) Grierson

Tanacetum corymbosum (L.) Sch. Bip.

Tanacetum densum (Labill.) Sch. Bip.

Tanacetum ferulaceum (Sch. Bip.) Walp.

Tanacetum haradjanii (Rech. f.) Grierson

Tanacetum huronense Nutt.

Tanacetum macrophyllum (Waldst. & Kit.) Sch. Bip.

Tanacetum microphyllum

Tanacetum microphyllum

Tanacetum microphyllum is a plant species in the genus Tanacetum found in Spain and Portugal.Santin and ermanin are O-methylated flavonols that can be found in T microphyllum as well as centaureidin and 5,3'-dihydroxy-4'-methoxy-7-carbomethoxyflavonol....

DC.

Tanacetum parthenifolium (Willd.) Sch. Bip.

Tanacetum parthenium (L.) Sch. Bip.

Tanacetum poteriifolium (Nordm.) Grierson

Tanacetum praeteritium (Horw.) Heywood

Tanacetum ptarmiciflorum

Tanacetum ptarmiciflorum

Tanacetum ptarmiciflorum is a shrub with silvery leaves, of the family Asteraceae. It is known as a decorative plant. It is commonly known as the Silver Lace Bush, its origin known to be in the Canary Islands. This subject is endangered in the wild, and is an attractive shrubby perennial It is...

(Webb) Sch. Bip.

Tanacetum vulgare L.

Sources: E+M NRCS, GRIN