1907] 
Check List of the Flora of Milwaukee County. 
229 
AMBROSIACEAE. 
Iva xanthiifolia (Fresen.) Nutt. Marsh Elder. 
Waste places in Menomonee Valley, also in Third and Fifth 
Wards. Locally abundant. 
Ambrosia trifida L. Great Ragweed. 
Throughout county. Locally abundant. 
A. triiida var. integrifolia (Muhl.) T. & G. 
Throughout county. With the preceding. 
A. artemisiaefolia L. Eagweed. 
Everywhere. ^ 
A. psilostachya DC. Western Ragweed. 
Menomonee Valley. Not common. 
Franseria Hookeriana Nutt. Gaertneria acanthicarpa (Hook.) Britten. 
Franzeria. Menomonee Valley, along railroad tracks. 
Xanthium strumarium L. X glahratum (DC.) Britton. 
Smootish Cocklebur. Throughout county. Common^ 
X. pennsylvanicum Wallr. Pennsylvania Clotbur. 
Waste places and along railroad tracks. Occasional. 
C0MP08ITAE. 
Vernonia fasciculata Michx. Western Iron-weed. 
Menomonee Valley and Oak Creek. Locally abundant. 
Eupatorium purpureum L. Joe-pye Weed. 
Throughout county. Common. 
E. perfoliatum L. Boneset. 
Throughout county. Common. 
E. ageratoides L. f. White Snake-root. 
Throughout county. Not uncommon. « 
Liatris pycnostachya Michx. Lacinaria pycnostachya (Michx.) Kuntze. 
Prairie Button Snake-root. 
Menomonee Valley, Wauwatosa. Not common. 
L. spicata Willd. Lacinaria spicata (L.) Kuntze. Gay Feather. 
Bay View. Locally abundant. 
Grindelia squarrosa (Pursh.) Dunal. Broad-leaved Gum-plant. 
Granville. Wauwatosa. Becoming common. 
