falsegold groundsel

(Packera pseudaurea var. semicordata)

Conservation Status
falsegold groundsel
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

SNR - Unranked

     
  Minnesota

not listed

     
           
Wetland Indicator Status
     
  Great Plains

FACW - Facultative wetland

     
  Midwest

FACW - Facultative wetland

     
  Northcentral & Northeast

FACW - Facultative wetland

     
           
 
Description
 
 

Falsegold groundsel, also called western heart-leaved groundsel, is an erect, perennial forb. It may be 4 to 24 in height, though it is usually 8 to 16 tall. It rises on usually 1 stem, occasionally 2 or 3 stems, from a short, slender or stout, erect rootstock. It does not produce stolons.

The stems are erect. When young they are covered with felty or cobwebby hairs near the base. At flowering they usually hairless or almost hairless.

Basal leaves are relatively small and broadly lance-shaped to egg-shaped. They are on long, slender leaf stalks. The leaf stalks are usually covered with felty or cobwebby hairs when young, becoming hairless or nearly hairless at flowering time. They are 1½ to 2 times as long as the leaf blade. The leaf blades are ¾ to 1½ long, to ¾ wide. They are usually held erect, perpendicular to the ground. They are rounded at the tip and usually shallowly heart-shaped or straight across at the base. They are usually unlobed, but sometimes have a few narrow, irregular lobes near the base. The upper and lower surfaces are hairless. The margins have rounded teeth. Basal leaves are usually present when the plant is in flower.

Stem leaves are alternate. Lower stem leaves are stalked. The leaf blades are deeply lobed (pinnatifid). As they ascend the stem the leaves become gradually smaller and stalkless or nearly stalkless. The upper and lower surfaces are hairless. The margins are sharply toothed.

The inflorescence is a loose or slightly condensed, branched cluster of 6 to 12 flower heads at the end of the stem. The outer heads are on longer flower stalks than the inner heads, resulting in a flat topped cluster. The flower stalks are hairless and usually have a small, leaf-like bract at the base.

The flower heads are ½ to 1¼ wide. There is a whorl of 21 green bracts (involucre) united for most of their length into a cylinder-shaped flower cup, and separated at the tip into pointed, thin lobes. The bracts do not have purple tips. The involucre is usually hairless, sometimes sparsely hairy near the base. There are 8 or 13 yellow ray florets and 70 to 80 or more yellow disk florets.

The fruit is a dry cypsela with hairs attached.

 
     
 

Height

 
 

4 to 24

 
     
 

Flower Color

 
 

Yellow ray florets, yellow or golden yellow disk florets

 
     
 

Similar Species

 
 

Golden ragwort (Packera aurea) basal leaves are much larger, 2 to 4 long and wide. They are heart-shaped, and strongly indented at the base. They are usually held angled upward or parallel to the ground. The involucral bracts have purple tips.

 
     
 
Habitat
 
 

Moist to moderate moisture. Prairies, streambanks.

 
     
 
Biology
 
 

Flowering

 
 

May to July

 
     
 
Use
 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

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

 
  7/9/2015      
         
 

Nativity

 
 

Native

 
         
 

Occurrence

 
 

 

 
         
 
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 Senecionodae  
  Tribe Senecioneae (groundsels and allies)  
  Subtribe Senecioninae  
  Genus Packera (ragwort)  
  Species Packera pseudaurea (falsegold groundsel)  
       
 

The 64 species in the genus Packera were formerly included in the genus Senecio.

 
       
 

Subordinate Taxa

 
 

 

 
       
 

Synonyms

 
 

Senecio aureus var. semicordatus

Senecio pseudaureus ssp. semicordatus

Senecio pseudaureus var. semicordatus

Senecio semicordatus

 
       
 

Common Names

 
 

falsegold groundsel

false-gold groundsel

western golden ragwort

western heart-leaved groundsel

 
       

 

 

 

 

 

 

 

 

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.

 

Caudex

A short, thickened, woody, persistent enlargement of the stem, at or below ground level, used for water storage.

 

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.

 

Involucre

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

 

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.

 

Stolon

An above-ground, creeping stem that grows along the ground and produces roots and sometimes new plants at its nodes. A runner.

       
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Plant

  falsegold groundsel    
       

Inflorescence

  falsegold groundsel    
       

Flower Head

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Stem Leaf

  falsegold groundsel   falsegold groundsel
       

Basal Leaf

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