206 GEOLOGY OF WINNESHIEK COUNTY. 
Ambrosia trifida L. Great Ragweed. A common weed in 
low places, along roadsides, etc. Decorah, Hesper, Calmar, Ft. 
Atkinson. 
Ambrosia trifida integrifolia (Muhl.) T.&G. Entire-leaved 
Ragweed. This variety is found in dry places. Decorah.’ 
Ambrosia artemisiaefolia L. Ragweed. A common weed, 
along roads, in fields, ete. Hesper, Calmar etc. 
Xanthium echinatum Murr. (X. canadense Mill., in part.) 
Cocklebur. In sandy soil. A common weed. Decorah. 
Familys5. Composite. 
Veronia fasciculata Michx. Western Iron-weed. A com- 
mon weed in alluvial pastures, etc. Ft. Atkinson, ete. 
Eupatorium maculatum UL. (E. purpureum L., in part.) 
Spotted Joe-pye Weed. In moist places, rather common locally. 
Ft. Atkinson. ; 
Eupatorium rydbergiit Britt. (FE. purpureum L., in part.) 
Rydberg’s Joe-pye Weed. In moist soils. Not rare at Hesper. 
Eupatorium aitissimum L. Tall Boneset. In Boge, ete. Quite 
common. Ft. Atkinson. 
Eupatorium ageratoides L.f. White Sanicle. In rich woods, 
common. Decorah, Highlandville. 
Kuhnia glutinosa Ell. (K. eupatorioides var. corymbulosa 
T. & G.) Prairie False Boneset. In dry open places. Ft. 
Atkinson. 
Lacinaria cylindracea (Michx.) Kuntze. (Liatris cylindracea 
Michx. and Liatris graminifolia Willd.) | Cylindric Blazing 
Star. Rare, on dry prairies and ridges. Hesper, Highland- 
ville. 
Lacinaria pycnostachya (Michx.) Kuntze. (Liatris pycnos- 
tachya Michx.) Prairie Blazing Star. Common on moist pra- 
iries and in meadows. Ft. Atkinson. 
Lacinaria scariosa (L.) Hill. (Liatris scariosa Willd.) Large 
Blazing Star. Common on drier prairies. Hesper, Ft. Atkin- 
son, Calmar. 
Solidago flexicaulis L. (8S. latifolia L.) Zigzag Goldenrod. 
Common in rich woods. Decorah, Canoe creek, north fork of 
Bear creek, Hesper. 
