Helianthus petiolaris Nutt.

PLANTS OF MONTANA
Prairie Co.
Helianthus petiolaris Nutt.
Common in a moist meadow on the south side of
the Yellowstone River west of the confluence with the
Powder River. 2,200 ft. 46°44'N 105° 25' W.
With Carex atherodes, Helianthus maximilliani
7 September 2008	# 10,106
Collected by Peter Lesica
02892629