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Hairy Coreopsis, Hairy Tickseed, Star Tickseed - Coreopsis pubescens


Family: Asteraceae - Aster family Genus Common Name: Tickseed Native Status: NativeDicot Perennial Herb
Coreopsis pubescens - Hairy Coreopsis, Hairy Tickseed, Star Tickseed. The Coreopsis genus has 35 - 50 species, almost all of them in the Americas, with 28 listed in Flora of North America. Coreopsis pubescens is primarily a species of the southeastern United States, with the range extending as far north as Illinois and as far west as Texas. It is of Special Concern in Kentucky.

Found in:
AL, AR, CT, FL, GA, IL, KS, KY, LA, MA, MO, MS, NC, OK, SC, TN, TX, VA, WV

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Coreopsis pubescens

Distribution of Coreopsis pubescens in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 18 Oct 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: Lula Lake, Walker County, Ga Date: 2013-August-03Photographer: Gerald C. Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro
Coreopsis pubescens usually has 8 yellow ray flowers per blossom. As is the case with many Coreopsis species, the tips of the ray flowers are lobed, and the lobes are often toothed.
Coreopsis pubescens

Site: Lula Lake, Walker County, GA Date: 2013-August-03Photographer: Gerald C Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro
Some Coreopsis species have 4, but others have 5 corolla lobes and 5 anthers on disk flowers. C. pubescens is among those that have 5. The disk flowers are fertile; the ray flowers are sterile.
Click on the photo for a larger image
Coreopsis pubescens

Site: Lula Lake, Walker County, GA Date: 2013-August-03Photographer: Gerald C Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro
"Coreopsis" comes from Greek words meaning "resembling bed-bugs" - referring to the shape and color of the seeds. "Tickseed" also refers to that shape/color. Here you can see the two rows of phyllaries remaining after the florets are gone, cupping the developing seeds.
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Coreopsis pubescens

Site: Lula Lake, Walker County, GA Date: 2013-August-03Photographer: Gerald C Williamson
Nikon D7000
The involucre has two rows of phyllaries. The outer ones are green and spreading, the inner ones yellow (to yellowish green) and press against the corolla.
Click on the photo for a larger image
Coreopsis pubescens

Site: Lula Lake, Walker County, GA Date: 2013-August-03Photographer: Gerald C Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro
The many leaves of Hairy Tickseed are opposite. The stem and leaves are usually variably hairy, but sometimes even glabrous, leading some authorities to recognize different varieties of Coreopsis pubescens. The leaves are entire, and more or less elliptic, and up to 3 inches long, usually around half as wide as they are long. They are petiolate, but the petiole is short but varying in length from .1 inch up to .5 inches long; occasionally as long as an inch. Some of the lower leaves may have lateral lobes.
Click on the photo for a larger image
Coreopsis pubescens

Site: Lula Lake, Walker County, GA Date: 2013-August-03Photographer: Gerald C Williamson
Nikon D7000
Coreopsis pubescens grows to around 3 feet tall, and branches in the upper half of the plant. It is a fairly leafy plant. Some of the leaves may have lateral lobes; the bottom right of the plant in this photo shows one of these.
Click on the photo for a larger image
Coreopsis pubescens

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2017
Photographs Copyright owned by the named photographer