Tall Rattlesnake-root
Nabalus altissimusAsteraceae — Aster family
Native
![Tall Rattlesnake-root](/images/prenanthes_altissima.jpg)
Middle Run Valley Natural Area
September 2001
![Tall Rattlesnake-root](/images/prenanthes_altissima_4.jpg)
![Tall Rattlesnake-root](/images/prenanthes_altissima_2.jpg)
A plant with unlobed leaves.
Rolling Mill RoadSeptember 2009
![Tall Rattlesnake-root](/images/prenanthes_altissima_3.jpg)
A plant with deeply lobed leaves.
White Clay Creek State Park -- Thompson Station RoadSeptember 2014
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Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.