Large-Flowered Tickseed, Largeflower Tickseed, Bigflower Coreopsis, Common Coreopsis

Coreopsis grandiflora

(Coreopsis grandiflora var. harveyana)

kor-ee-OP-sis  gran-dih-FLOR-uh

Synonyms of Coreopsis grandiflora (1) (Updated on 7-11-26 from Plants of the World Online): Bidens sweetiana Banfi, Galasso & Bartolucci (2017)
Synonyms of Coreopsis grandiflora var. grandiflora (autonym) (7) (Updated on 7-11-25 from POWO): Coreopsis boykiniana Nutt. (1841), Coreopsis grandiflora f. demareei Sherff (1944), Coreopsis grandiflora f. pilosa (Sherff) E.B.Sm. (1976), Coreopsis grandiflora var. pilosa Sherff (1930), Coreopsis grandiflora var. subintegrifolia Torr. & A.Gray (1842), Coreopsis heterolepis Sherff (1930), Coreopsis heterophylla Nutt. (1841)
Synonyms of Coreopsis grandiflora var. harveyana (2) (Updated on 7-11-26 from POWO): Coreopsis grandiflora f. harveyana (A.Gray) Sherff (1948), Coreopsis harveyana A.Gray (1884)
Synonyms of Coreopsis grandiflora var. longipes (2) (Updated on 7-11-26 from POWO): Coreopsis grandiflora f. longipes (Hook.) Voss (1894), Coreopsis longipes Hook. (1837)
Synonyms of Coreopsis grandiflora var. saxicola (2) (Updated on 7-11-26 from POWO): Coreopsis saxicola Alexander (1932), Coreopsis saxicola var. duncanii Sherff (1952)

Coreopsis grandiflora Hogg ex Sweet is the accepted scientific name for this species of Coreopsis. It was described as such by Robert Sweet in The British Flower Garden in 1826 using earlier descriptions by Thomas Hogg.

Coreopsis grandiflora var. harveyana Sherff is the accepted name of this variety. It was named and described as such by Earl Edward Sherff in the Botanical Gazette in 1933.

Accepted Infraspecific Names (5) (Updated from POWO on 7-11-26): *Coreopsis grandiflora var. grandiflora (autonym), Coreopsis grandiflora var. harveyana (A.Gray) Sherff (1933), Coreopsis grandiflora var. inclinata J.R.Allison (2001), Coreopsis grandiflora var. longipes (Hook.) Torr. & A.Gray (1842), Coreopsis grandiflora var. saxicola (Alexander) E.B.Sm. (1973). *When an infraspecific taxon is named, an autonym (“type-specimen”) is automatically generated whose description is closest to the (original) species. All have their own list of synonyms except for Coreopsis grandiflora var. inclinata which apparently has none…

The genus, Coreopsis L., was named and described as such by Carl von Linneaus in the second volume of the first edition of Species Plantarum in 1753.

As of 7-11-26 when this page was first published, Plants of the World Online lists 39 species in the Coreopsis genus. It is a member of the plant family Asteraceae with 1,714 genera. Those numbers could change as updates are made on POWO.

The above distribution map for Coreopsis grandiflora as a whole is from Plants of the World Online. Areas in green are where the species is native and purple where it has been introduced. You can click on the link above for maps for the specific varieties. The map on the USDA Plants Database is similar. No map is perfect, but they do give a general idea.

The map on iNaturalist shows where members have made observations. You can find information about specific varieties by doing a search. Anyone can join and it is a great website to confirm and share your observations. The maps on iNaturalist are continually updated as members post new observations. I post all my observations on iNaturalist.

THERE ARE SEVERAL LINKS AT THE BOTTOM OF THE PAGE FOR FURTHER READING AND TO HELP WITH A POSITIVE ID.

I first found this species growing at the Lordi Marker Prairie east of town on 6-8-26 while visiting with a friend and Drover’s Prairie on 6-22-26. The prairies are AWESOME with such a variety of wildflowers.

I apologize for not adding descriptions when this page was published. It takes more time and I wanted to go ahead and get the photos online. There are several links at the bottom of the page with a lot of useful information and descriptions that can help with a positive ID.

The leaves are more dissected and finer than Coreopsis grandiflora var. grandiflora and the other varieties.

The above photo and next two were taken at Drover’s Prairie, not far from Lordi Marker, on 6-22-26.

 

I will continue going to the prairies and adding more photos.

There are several cultivars available for flower beds.

I live on the family farm in Windsor, Missouri in Pettis County (Henry County is across the street, and Benton and Johnson aren’t far away). I have grown over 500 different plants and identified over 250 species of wildflowers (most have pages listed on the right side of the page). I am not an expert, botanist, or horticulturalist. I just like growing, photographing, and writing about my experience. I rely on several websites for ID and a few horticulturalists I contact if I cannot figure them out. Wildflowers can be variable from location to location, so that can be a bit confusing. If you see I have made an error, please let me know so I can correct what I have written.

I hope you found this page useful and be sure to check the links below for more information. They were written by experts and they have provided much more information. Some sites may not be up-to-date but they are always a work in progress. If you can, I would appreciate it if you would click on the “Like” below and leave a comment. It helps us bloggers stay motivated. I would enjoy hearing from you especially if you notice something is a bit whacky.

FOR FURTHER READING:
PLANTS OF THE WORLD ONLINE (GENUS/SPECIES/VAR.)
INTERNATIONAL PLANT NAMES INDEX (GENUS/SPECIES/VAR.)
TROPICOS (GENUS/SPECIES)
FLORA OF MISSOURI (GENUS/SPECIES)
FLORA OF NORTH AMERICA (GENUS/SPECIES)
WORLD FLORA ONLINE (GENUS/SPECIES)
WIKIPEDIA (GENUS/SPECIES)
USDA PLANTS DATABASE
iNATURALIST
MISSOURI PLANTS
MISSOURI BOTANICAL GARDEN
WILDFLOWER SEARCH
GO BOTANY
ILLINOIS WILDFLOWERS
KANSAS NATIVE PLANTS
KANSAS WILDFLOWERS AND GRASSES
LADY BIRD JOHNSON WILDFLOWER CENTER
NATIVE PLANT SOCIETY OF TEXAS
NORTH CAROLINA STATE UNIVERSITY
SEINet
SOUTH CAROLINA NATIVE PLANT SOCIETY

NOTE: The data (figures, maps, accepted names, etc.) may not match on these websites. It depends on when and how they make updates and when their sources make updates. Some websites have hundreds and even many thousands of species to keep up with. Accepted scientific names change periodically and it can be hard to keep with as well. Some of the links may use a name that is a synonym on other sites. In my opinion, Plants of the World Online by Kew is one of the most reliable and up-to-date plant databases and they make updates regularly. I make updates “at least” once a year and when I write new pages or add new photos but I do get behind. We are all a work in progress. 🙂