Tanacetum vulgare L.

Mississippi River-Navigation Pool 8
< t N Mile 679.2-692
Coll:	S.R.	Ziegler	No.	2498	Date:	8	Seot	1Q7^
M.F. Leykom	^	3/0
HERBARIUM OF
THE UNIVERSITY OF WISCONSIN-LA CROSSE
La Crosse, Wisconsin
Plants of Dredge Spoil Sites
Tanacetum vulgare L.
(Compositae)
Wisconsin, Vernon Co.; Island 6; Mississippi River-
mile #687.2; T14N R7W Sec 19
Age of dredge material-8 yr; Approx. elevation-634 ft,
Normal Pool elevation-631 ft. Large site W side of
main channel; specimen growing on central dredge
matérial deposition site
02919069