''Descurainia'' is a genus of plants in the family

Brassicaceae Brassicaceae () or (the older but equally valid) Cruciferae () is a medium-sized and economically important Family (biology), family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous pla ...

which are known commonly as the tansymustards. The genus name commemorates French botanist and herbalist François Descurain (1658–1749). The plants are similar in appearance to other mustards, sending up long erect stems and bearing small yellow or whitish flowers. Many species are

noxious weed A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is harmful to agricultural or horticultural crops, natural habitats or ecosystems, or humans or lives ...

s. Some species are toxic to livestock and become a nuisance when they grow in grazing fields. Plants of this genus are found worldwide in temperate regions. ''

Descurainia sophia ''Descurainia sophia'' is a member of the family Brassicaceae. Common names include flixweed, herb-Sophia and tansy mustard. It reproduces by seeds. It is a dominant weed in dark brown prairie and black prairie soils of southern Alberta. Its ...

'', (flixweed or herb sophia), is the type species of ''Descurainia''. Selected species: *'' Descurainia antarctica'' - Tierra del Fuego tansymustard *'' Descurainia bourgaeana'' *'' Descurainia californica'' - Sierra tansymustard *'' Descurainia incana'' - mountain tansymustard *'' Descurainia obtusa'' - blunt tansymustard *'' Descurainia paradisa'' - paradise tansymustard *'' Descurainia pinnata'' - western tansymustard *'' Descurainia ramosissima'' - Villa Grove tansymustard *''

'' - flixweed, herb-Sophia or tansy *'' Descurainia sophioides'' - northern tansymustard *'' Descurainia torulosa'' - Wind River tansymustard

References

External links

Jepson Manual Treatment
Brassicaceae genera {{Brassicales-stub