Coreopsis

Coreopsis common names include tickseed and calliopsis) is a genus of herbs in the family Asteraceae. Many of its 35 to 114[5] species are cultivated. Twenty-eight species are native to North America and the others come from Central and South America. The flowers are usually yellow with a toothed tip. They have showy flower heads with involucral bracts in two distinct series of eight each, the outer being commonly connate at the base. The name Coreopsis is derived from the Greek words κορις (koris), meaning "bedbug," and ὄψις (opsis), meaning "view," referring to the shape of the achene.[6]
Coreopsis species are used as food plants by the caterpillars of some Lepidoptera species including Coleophora acamtopappi.
Coreopsis is closely related to Bidens. In fact, neither Coreopsis nor Bidens, as defined in the 20th century, is monophyletic. One group which does seem to be monophyletic consists of temperate species from North America, including five sections of Coreopsis, Bidens coronata and Bidens tripartita, and the genus Thelesperma (five species).[2]
All Coreopsis species were designated the state wildflower of Florida in the United States in 1991.[7]
==Species==
* Coreopsis auriculata L. – Lobed Tickseed
* Coreopsis basalis (A.Dietr.) S.F.Blake – Goldenmane Tickseed
* Coreopsis bigelovii (A.Gray) Voss – Bigelow's Tickseed
* Coreopsis californica (Nutt.) H.Sharsm. – California Tickseed
* Coreopsis calliopsidea (DC.) A.Gray – Leafstem Tickseed
* Coreopsis cuneifolia Greenm.
* Coreopsis cyclocarpa S.F.Blake
* Coreopsis delphiniifolia Lam. – Larkspurleaf Tickseed
* Coreopsis douglasii (DC.) H.M.Hall – Douglas's Tickseed
* Coreopsis floridana E.B.Sm. – Florida Tickseed
* Coreopsis gigantea (Kellogg) H.M.Hall – Giant Coreopsis
* Coreopsis gladiata Walter – Coastalplain Tickseed
* Coreopsis grandiflora Hogg ex Sweet – Large-flowered Tickseed
* Coreopsis hamiltonii (Elmer) H. Sharsm. – Mount Hamilton Tickseed
* Coreopsis integrifolia Poir. – Fringeleaf Tickseed
* Coreopsis intermedia Sherff – Goldenwave Tickseed
* Coreopsis lanceolata L. – Lance Coreopsis, Lance-leaf Tickseed
* Coreopsis latifolia Michx. – Broadleaf Tickseed
* Coreopsis leavenworthii Torr. & A.Gray – Leavenworth's Tickseed
* Coreopsis linifolia Nutt. – Texas Tickseed
* Coreopsis major Walter – Greater Tickseed
* Coreopsis maritima (Nutt.) Hook.f. – Sea Dahlia
* Coreopsis mcvaughii D.J.Crawford
* Coreopsis mutica DC.
* Coreopsis nudata Nutt. – Georgia Tickseed
* Coreopsis nuecensis A.Heller – Crown Tickseed
* Coreopsis nuecensoides E.B.Sm. – Rio Grande Tickseed
* Coreopsis palmata Nutt. – Stiff Tickseed
* Coreopsis paludosa M.E.Jones
* Coreopsis petrophila A.Gray
* Coreopsis petrophiloides B.L.Rob. & Greenm.
* Coreopsis pubescens Elliott – Star Tickseed
* Coreopsis pulchra F.E.Boynton – Woodland Tickseed
* Coreopsis rosea Nutt. – Pink Tickseed
* Coreopsis rudis (Benth.) Hemsl.
* Coreopsis stillmanii (A.Gray) S.F.Blake – Stillman's Tickseed
* Coreopsis tinctoria Nutt. – Plains Coreopsis
* Coreopsis tripteris L. – Tall Tickseed
* Coreopsis verticillata L. – Whorled Tickseed
* Coreopsis wrightii (A.Gray) H.M.Parker – Rock Tickseed
===Formerly placed here===
* Bidens alba (L.) DC. (as C. alba L.)
* Bidens aristosa (Michx.) Britton (as C. aristosa Michx.)
* Bidens aurea (Aiton) Sherff (as C. aurea Aiton)
* Bidens mitis (Michx.) Sherff (as C. mitis Michx.)
* Bidens trichosperma (Michx.) Britton (as C. trichosperma Michx.)
* Cosmos bipinnatus Cav. (as C. formosa Bonato)	
* Cosmos parviflorus (Jacq.) Pers. (as C. parviflora Jacq.)
* Iostephane heterophylla (Cav.) Hemsl. (as C. heterophylla Cav.)
* Simsia amplexicaulis (Cav.) Pers. (as C. amplexicaulis Cav.)
* Simsia foetida (Cav.) S.F.Blake (as C. foetida Cav.)
* Thelesperma filifolium (Hook.) A.Gray (as C. filifolia Hook.)
* Verbesina alternifolia (L.) Britton ex Kearney (as C. alternifolia L.)
==References==