prairie coreopsis

(Coreopsis palmata)

               
Conservation Status

IUCN Red List

not listed

prairie coreopsis

NatureServe

N5? - Secure

SNR - Unranked

Minnesota

not listed

Nativity

Native

Occurrence

 

Habitat

Dry to moderate moisture. Prairies, meadows. Full sun.

Flowering

June to August

Flower Color

Yellow

Height

12 to 48

 
Identification

This is a 12 to 48 tall, erect, perennial forb that rises on usually one or more stems from a long, creeping rhizome. It sometimes forms dense colonies.

The stems are erect, unbranched, and mostly hairless or sparsely hairy at the base of the leaves. They are green with light green vertical stripes.

The leaves are opposite, broadly inversely egg-shaped in outline, 1 to 3 long, and stalkless or almost stalkless. They are distributed in 6 to 12 pairs along or more of the stem. They are usually hairless but sometimes have a few hairs on the margin near the base. The leaf blades are usually divided into 3 lobes well above the base and have the shape of a turkey foot. The lobes are sometimes lobed again, resulting in 3 to 7 (rarely to 9) ultimate lobes. The lobes are narrowly oblong, to 1½ long, and 1 16 to usually , sometimes ¼, wide. Upper leaves are sometimes unlobed.

The inflorescence is one to a few flower heads at the end of the stem and from upper leaf axils.

The flower heads are 1½ to 2½ wide on stalks to 2 long. The involucre is bell-shaped and is composed of 2 series of bracts, 8 inner bracts and 9 to 12 or more outer bractlets. The inner bracts are yellow-brown, oblong to nearly circular, ¼ to long, to 3 16 wide, and bent backward above the middle. The outer bracts are green, linear, ascending, and about ¼ long and .

There are 8 to 10 ray florets and 60 to 80 disk florets. The ray florets are yellow, to 1 long, and about wide. They are more or less rounded at the tip and may have 2 or 3 (sometimes 4) tiny teeth at the tip. The disk is to ½ wide. The disk floret is a yellow, 5-lobed corolla tube with a branched style. There is no floral scent.

The fruit is an achene that does not have a tuft of hair (pappus) attached.

 
Similar
Species

Plains coreopsis (Coreopsis tinctoria var. tinctoria) is much branched above the middle. The leaves are pinnate, bipinnate, or 3 times pinnately compound. The inner bracts on the involucre are reddish. The ray flowers have a red-brown blotch at the center and are divided at the tip into 3 lobes. The disk flowers have a dark tip causing the disk to appear dark.

 
Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 28.
 
Comments

 

 
Taxonomy

Family:

Asteraceae (aster)

 

Subfamily:

Asteroideae

 

Supertribe:

Helianthodae

 

Tribe:

Coreopsideae

 

Section:

Gyrophyllum

 
Synonyms

 

 
Common
Names

finger tickseed

prairie coreopsis

prairie tickseed

stiff tickseed

wedgeleaf coreopsis

 

 

 

 

 

 

Glossary

Achene

A dry, one-chambered, single-seeded fruit, formed from a single carpel, with the seed attached to the membranous outer layer (wall) only by the seed stalk; the wall, formed entirely from the wall of the superior ovary, does not split open at maturity, but relies on decay or predation to release the contents.

 

Axil

The upper angle where the leaf stalk meets the stem.

 

Bract

Modified leaf at the base of a flower stalk or flower cluster.

 

Corolla

A collective name for all of the petals of a flower.

 

Involucre

A whorl of bracts beneath or surrounding a flower or flower cluster.

 

Pappus

The modified calyx composed of awns, scales, bristles, or feather-like hairs in plants of the Aster family such as thistles and dandelions.

 

Rhizome

A horizontal, usually underground stem. It serves as a reproductive structure, producing roots below and shoots above at the nodes.

       
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Plant

  prairie coreopsis    
       

Inflorescence

  prairie coreopsis   prairie coreopsis
       

Flower Head

  prairie coreopsis    
       

Leaves

  prairie coreopsis    
       

Early Spring

  prairie coreopsis    
       

Late Summer

  prairie coreopsis   prairie coreopsis
       
  prairie coreopsis   prairie coreopsis
       
       

 

Camera

     
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  Coreopsis palmata PRAIRIE COREOPSIS
Frank Mayfield
 
  Coreopsis palmata PRAIRIE COREOPSIS  

 

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MinnesotaSeasons.com Sightings
         

Blue Mounds State Park

Bunker Hills Regional Park

Butternut Valley Prairie SNA

Cambria WMA

Carpenter St. Croix Valley Nature Center

Charles A. Lindbergh State Park

Compass Prairie SNA

Crow-Hassan Park Reserve

Des Moines River SNA

Glacial Lakes State Park

Glynn Prairie SNA

Great River Bluffs State Park

Helen Allison Savanna SNA

Hole-in-the-Mountain Prairie

Holthe Prairie SNA

Iron Horse Prairie SNA

Joseph A. Tauer Prairie SNA

Kasota Prairie

Kasota Prairie SNA

Keller Regional Park

Kellogg Weaver Dunes SNA, Kellogg Weaver Unit

Kilen Woods State Park

King’s and Queen’s Bluff SNA

Lake Elmo Park Reserve

Lake Louise State Park

Langhei Prairie SNA

Lebanon Hills Regional Park

Lost Valley Prairie SNA

McKnight Prairie

Mississippi River County Park

Northern Tallgrass Prairie NWR, Hoffman Unit

Northern Tallgrass Prairie NWR, Touch the Sky Prairie Unit

Oronoco Prairie SNA

Osmundson Prairie SNA

Otter Tail Prairie SNA

Pembina Trail Preserve SNA, Pembina Trail Unit

Prairie Creek WMA, Koester Prairie Unit

Racine Prairie SNA

Red Rock Prairie

Regal Meadow

Rice Lake Savanna SNA

Rock Ridge Prairie SNA

Rockville County Park

Roscoe Prairie SNA

St. Croix Savanna SNA

Sand Prairie Wildlife Management and Environmental Education Area

Schaefer Prairie

Sedan Brook SNA

Sheepberry Fen

Spring Creek Prairie SNA

Spring Lake Park Reserve

Staffanson Prairie

Strandness Prairie

Tiedemann WMA

Uncas Dunes SNA

Valley View Park

Verlyn Marth Memorial Prairie SNA

Vermillion Highlands Research Recreation and WMA

Vermillion River WMA

Whitetail Woods Regional Park

Whitewater State Park

Wild River State Park

Woodbury WMA

 

 

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