Sharp-leaved, whorled or
   mountain aster
Sharp-leaved, whorled or
   mountain aster
Aster acuminatus
Aster of Composite Family - Asteraceae
This 1 to 3 foot tall woodland herb has the upper leaves (generally larger than the lower ones) closely situated and arranged in such a way that they appear whorled, especially when viewed from above.
  Pathology Images Inc. 2001 to  2002
Leaves lance-shaped, pointed, and sharply but coarsely toothed. Flower heads generally white, but may be purple-tinged, about 1 to 1.5 inches wide and with 12 to 18 narrow rays. Number of flower heads variable (several to many). Stem zig-zag and hairy.
(Photographed at Eagle Lake - September 5, 2002)