MMuhlenberg College


Graver Home

 
Virtual Tour
Collections
 



Rudbeckia triloba

Common Name of Species: Thin Leaved Coneflower
Family: Asteraceae
  


Entry Author:  C. Friedl, Muhlenberg College
Description: 
Thin-leaved coneflowers can be identified by their rich, golden yellow florets, which are rather short and stubby.
Leaves: 
Lower leaves are divided into 3-lobes, have a broad leaf stalk and are toothed.  Upper leaves are ovate and elongated with coarsely toothed margins.
Flowers: 
8-10 golden yellow rays per flower.  Rays are rather stubby for this genus.  Flower heads are 1-2 inches in length.
Stem: 
Branching and hairy.
Branching Pattern:  
Leaves grow in alternate pattern.
Height: 
2-5 feet high.
Branching Pattern of Leaves: Leaves grow alternate to one another. 

Conditions/Habitat: 
Open woods and thickets.  Wet or dry soil.
Range:  Can be found East from Minnesota to New York and New Jersey, and Southward to Texas and Florida.

References:
Niering, W.A., Olmstead, N.C, & Thieret, J.W. (2001). National Audubon Society Field Guide to North American Wildflowers Eastern Region (Revised Edition).  New York: Random House Inc.

Newcomb, Lawrence (1977).  Newcomb’s Wildflower Guide.  New York: Little, Brown.
     

McKenny, M. & Peterson R.T. (1996). Peterson Field Guides: Wildflowers Northeastern/ North-central North America. New York: Houghton Mifflin.

USDA, NRCS (2004). Plants Database, Version 3.05 (http://plants.usda.gov).  National Plant Data Center, Baton Rouge, LA 70874 USA.



     

This page was created by: C. Friedl, Muhlenberg College
Last updated 11/10/05