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Rudbeckia triloba

Common Name of Species: Thin Leaved Coneflower
Family: Asteraceae

Entry Author:  C. Friedl, Muhlenberg College
Thin-leaved coneflowers can be identified by their rich, golden yellow florets, which are rather short and stubby.
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.
8-10 golden yellow rays per flower.  Rays are rather stubby for this genus.  Flower heads are 1-2 inches in length.
Branching and hairy.
Branching Pattern:  
Leaves grow in alternate pattern.
2-5 feet high.
Branching Pattern of Leaves: Leaves grow alternate to one another. 

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.

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 (  National Plant Data Center, Baton Rouge, LA 70874 USA.


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