Rhus glabra L.
Family: Anacardiaceae
smooth sumac
[Rhus borealis Greene,  more...]
Rhus glabra image
Merel R. Black  
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Hugh H. Iltis  
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University of Wisconsin - Madison (WIS-VP)  
Etymology: Rhus: derived from rhous, an ancient Greek name for Sumac
Plants: perennial shrub usually with only a few branches; twigs smooth; forming large colonies
Leaves: alternate, pinnately-divided into 11-31, often toothed leaflets, very pale below, main axil not winged
Flowers: in terminal cluster to 8"
Fruits: bright red, flattish, very hairy berry
Habitat: uplands, roadsides, woods edges
Conservation Status: Native - potentially invasive
Thin woods of Jack pine, oak-basswood, oak, oak-hickory, oak-pine, basswood-hickory, pine; dry to mesic prairies (often on bluffs), oak barrens, oak savannas, open bluffs and clifftops, fields, thickets, old quarries, sand pits, along roadsides and railroads.

Occurring mostly south of the Tension Zone with scattered records from farther north.  Both R. glabra and R. typhina are much more widespread but are ignored by collectors because of their large leaves and inflorescences, which are difficult to press.  Rhus glabra usually grows in drier sites than R. typhina.

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Hugh H. Iltis  
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Merel R. Black  
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Merel R. Black  
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Kenneth J. Sytsma  
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Michael Clayton  
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Aaron_Carlson  
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Aaron_Carlson  
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Aaron_Carlson  
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Aaron_Carlson  
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Robert W. Freckmann  
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Botanical Illustration  
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Marion Sheehan  
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Botanical Illustration