''Cota tinctoria'', the golden marguerite, yellow chamomile, or oxeye chamomile, is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

flowering plant in the sunflower family. Other common names include dyer's chamomile, Boston daisy, and Paris daisy. In horticulture this plant is still widely referred to by its synonym ''Anthemis tinctoria''. It is a short-lived plant often treated as biennial, native to Europe, the Mediterranean and Western Asia and naturalized in scattered locations in North America. It has aromatic, bright green, feathery foliage. The serrate leaves are bi-pinnatifid (= finely divided) and downy beneath. It grows to a height of . It has yellow daisy-like terminal flower heads on long thin angular stems, blooming in profusion during the summer.Flora of North America, Golden marguerite, yellow chamomile, ''Cota tinctoria'' (Linnaeus) J. Gay ex Gussone, Fl. Sicul. Syn. 2: 867. 1845.
/ref> It has no culinary or commercial uses and only limited medicinal uses. However, it produces excellent yellow, buff and golden-orange dyes, used in the past for fabrics. ''Cota tinctoria'' is grown in gardens for its bright attractive flowers and fine lacy foliage; there is a white-flowering form. Under the synonym ''Anthemis tinctoria'', the

cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

'E.C. Buxton' has gained the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. It includes the full range of cultivated p ...

. The popular seed-raised cultivar 'Kelwayi' has 5 cm wide, yellow flowers on 65 cm plants. The species hybridizes with ''

Tripleurospermum inodorum ''Tripleurospermum inodorum'', common names scentless false mayweed, scentless mayweed, scentless chamomile, and Baldr's brow, is the type species of ''Tripleurospermum''. This plant is native to Eurasia, and introduced to North America, where i ...

'' to form the hybrid × ''Tripleurocota sulfurea''.

Subspecies

* ''Cota tinctoria'' subsp. ''australis'' (R.Fern.) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''euxina'' (Boiss.) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''fussii'' (Griseb. & Schenk) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''gaudium-solis'' (Velen.) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''parnassica'' (Boiss. & Heldr.) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''sancti-johannis'' (Stoj. & al.) Oberpr. & Greuter * ''Cota tinctoria'' subsp. ''virescens'' (Bornm.) Oberpr. & Greuter

References

Anthemideae Medicinal plants of Africa Medicinal plants of Asia Medicinal plants of Europe Garden plants of Asia Garden plants of Europe Plant dyes Flora of Europe Flora of Asia Plants described in 1753 Taxa named by Carl Linnaeus {{medicinal-plant-stub