cut-leaved coneflower

(Rudbeckia laciniata var. laciniata)

Conservation Status
cut-leaved coneflower
  IUCN Red List

not listed

     
  NatureServe

N5 - Secure

SNR - Unranked

     
  Minnesota

not listed

     
           
Wetland Indicator Status
     
  Great Plains

FAC - Facultative

     
  Midwest

FACW - Facultative wetland

     
  Northcentral & Northeast

FACW - Facultative wetland

     
           
 
Description
 
 

Cut-leaved coneflower is a 1½ to 10 tall, erect, perennial forb that rises on one or more stems from a fibrous roots and a horizontal, underground, somewhat woody stem (rhizome). It often forms colonies.

A single stem or multiple stems rise from a rosette of basal leaves. The stem is erect, round in cross section, ridged, unbranched below the middle, and branched toward the tip. It is hairless; light green, bluish-green or purplish; and usually covered with a whitish, waxy coating (glaucous).

Stem leaves are alternate. Basal and lowermost stem leaves are on long leaf stalks. The leaf blade is egg-shaped to broadly egg-shaped in outline, 6 to 20 long, and 4 to 12 wide. It is either deeply lobed (pinnatifid) with 3 to 7 lobes, or pinnately divided into usually 3, sometimes 5 or to 7, leaflets. The lobes are egg-shaped to elliptic or inversely egg-shaped and tapered to a sharp point at the tip. On both divided and lobed leaves the terminal leaflet is usually deeply divided into 3 lobes. The terminal lobe is shallowly, symmetrically lobed. The upper and lower surfaces are hairless or sparsely covered with short, stiff hairs and are also sometimes somewhat glaucous. The upper surface is smooth to the touch. The margins of the ultimate lobes and leaflets are untoothed, finely toothed, or coarsely toothed. The leaves become smaller, shorter stalked, and less divided or lobed as they ascend the stem. Middle and upper stem leaves have 5 to 9 lobes. Middle stem leaves are 3 to 16 long, and 1¼ to 8 wide with lance-shaped to egg-shaped or elliptic lobes. Upper stem leaves are unlobed or divided into 3 lobes and are sometimes unstalked.

The inflorescence is a leafy, loose, flat-topped, corymb-like array of 2 to 25 flower heads at the top of the plant. The flower heads are showy and up to 3 in diameter.

The whorl of bracts at the base of the flower head (involucre) is to 13 16 in diameter and narrowly saucer-shaped, more or less round with a shallow depth. It is composed of 8 to 15 bracts (phyllaries) in 2 overlapping series. The phyllaries are egg-shaped to lance-shaped and up to ¾ long. The outer surface and the margins are sometimes hairless but more often moderately to densely covered with fine hairs, especially toward the base.

The flower head has 8 to 12 ray florets and 150 to 300 or more disk florets. The ray florets are yellow, ellipse-shaped to inversely lance-shaped, ¾ to 1¾ long, and ¼ to wide. They usually angle downward, sometimes droop downward, at the base of the receptacle. The receptacle is egg-shaped to globe-shaped, to 1 long, and to ¾ wide. It is covered with disk florets. The disk florets are to 3 16 long and dull yellow to yellowish-green, with yellow lobes toward the tip.

The fruit is a dry, one-seeded, to ¼ long seed capsule (cypsela). The tip of the cypsela is flattened and has no hairs but a low crown.

 
     
 

Height

 
 

1½ to 10

 
     
 

Flower Color

 
 

Yellow ray florets, dull yellow to yellowish-green disk florets

 
     
 

Similar Species

 
 

 

 
     
 
Habitat
 
 

Moist. Woodland edges, stream sides. Full to partial sun.

 
     
 
Biology
 
 

Flowering

 
 

July to September

 
     
 
Use
 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

2, 3, 4, 5, 7, 24, 28.

 
  9/9/2013      
         
 

Nativity

 
 

Native

 
         
 

Occurrence

 
 

Common

 
         
 
Taxonomy
 
  Kingdom Plantae (green algae and land plants)  
  Subkingdom Viridiplantae (green plants)  
  Infrakingdom Streptophyta (land plants and green algae)  
  Superdivision Embryophyta (land plants)  
  Division Tracheophyta (vascular plants)  
  Subdivision Spermatophytina (seed plants)  
  Class Magnoliopsida (flowering plants)  
  Superorder Asteranae  
 

Order

Asterales (sunflowers, bellflowers, fanflowers, and allies)  
 

Family

Asteraceae (sunflowers, daisies, asters, and allies)  
  Subfamily Asteroideae  
  Supertribe Helianthodae  
  Tribe Heliantheae (sunflowers and allies)  
  Subtribe Rudbeckiinae  
  Genus Rudbeckia (coneflower)  
  Section Macrocline  
  Species Rudbeckia laciniata (cut-leaved coneflower)  
       
 

Subordinate Taxa

 
 

 

 
       
 

Synonyms

 
 

Rudbeckia laciniata var. gaspereauensis

Rudbeckia laciniata var. hortensis

 
       
 

Common Names

 
 

cut-leaved coneflower

cutleaf coneflower

green-headed coneflower

tall coneflower

wild golden-glow

 
       

 

 

 

 

 

 

 

 

Glossary

Bract

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

 

Corymb

A flat-topped or convex inflorescence in which the stalked flowers grow upward from various points on the main stem to approximately the same horizontal plane. The outer flowers open first.

 

Cypsela

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 from the wall of the inferior ovary and also from other tissues derived from the receptacle or hypanthium, does not split open at maturity, but relies on decay or predation to release the contents.

 

Glaucous

Pale green or bluish gray due to a whitish, powdery or waxy film, as on a plum or a grape.

 

Pinnate

Having the leaflets of a compound leaf arranged on opposite sides of a common stalk.

 

Pinnatifid

Deeply cut, more than half way to the midrib but not to the midrib, into lobes that are spaced out along the midrib; the lobes do not form separate leaflets.

 

Receptacle

The thickened, upper part of a flower stalk to which flowers or flower parts are attached. In composite flowers, the part on which the flowers are borne. In accessory fruits the receptacle gives rise to the edible part of the fruit.

 

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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Alfredo Colon
       
  cut-leaved coneflower   cut-leaved coneflower
       
  cut-leaved coneflower    
       
Bill Reynolds
       

Was at the Old Treaty Crossing Festival Huot MN today. Came across a large patch of Cut-Leaf Coneflower which all abuzz with Honey Bees and Tricolored Bumble Bees.

  tricolored bumble bee and cut-leaved coneflower   tricolored bumble bee and cut-leaved coneflower
       
MinnesotaSeasons.com Photos
   

Plant

  cut-leaved coneflower   cut-leaved coneflower
       

Inflorescence

  cut-leaved coneflower   cut-leaved coneflower
       

Flower Head

  cut-leaved coneflower    
       

Leaves

  cut-leaved coneflower   cut-leaved coneflower
       
  cut-leaved coneflower   cut-leaved coneflower
       

Stem

  cut-leaved coneflower    
       
       

 

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slideshow

       
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Other Videos
 
  Published on Aug 24, 2012
Ionxchange
 
   
 
About

Published on Aug 24, 2012

Earthyman views Wild Goldenglow (Rudbeckia lanciniata) also known as Greenheaded Coneflower at Ion Exchange, native seed and plant nursery in NE Iowa. Wild Goldenglow is a great pollinator along your woodland edge. http://ionxchange.com/products/RUDBECKIA-LACINIATA-%7C-Wild-Golden-Glow.html

   
       

 

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Visitor Sightings
   

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Alfredo Colon
8/2/2019

Location: Woodbury, Minnesota

cut-leaved coneflower


Bill Reynolds
8/26/2017

Location: Red Lake Co MN

Was at the Old Treaty Crossing Festival Huot MN today. Came across a large patch of Cut-Leaf Coneflower which all abuzz with Honey Bees and Tricolored Bumble Bees.

tricolored bumble bee


     
     
 
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