; e 
96 THE AMERICAN MIDLAND NATURALIST. 
Ambrosia psilostachya DC. PERENNIAL RAGWEED 
Dry prairie or roadside. Frequent. 
Xanthium canadense Mill. _ COCKLEBUR. 
River bank, low fields and roadsides. Common. Aug. 15. 
Xanthium echinatum Murr. 
Dry soil especially around railroad tracks. Common. Aug. 5. 
Asteraceae, Aster Family. 
Vernonia fasciculata Michx. IRONWEED. 
Ditches or low prairie. Common. July 30 (31). 
Eupatorium ageratoides L. WHITE SNAKEROOT. 
Woods. Occasional. 
Kuhnia glutinosa EM. FALSE BONESET. 
Prairie. Occasional. July 25.. 
Lacinaria punctata (Hook) Kuntze. 
*NARROW-LEAVED BLAZING STAR. 
Along railroad. -Introduced in gravel. Occasional. Aug. 5. 
Lacinaria scariosa (1,.) Hill. BLAZING STAR. 
Prairie. Common. Aug. 5 (5). 
Grindelia squarrosa (1,.) Dunal. GUMWEED. 
Roadsides. Common. July 30; 3 years data, excluding two of 
July 2 and June 16. An occasional plant often flowers much in 
advance of the average. 
Chrysopsts villosa Nutt. | GOLDEN ASTER. 
Along railroad (introduced in gravel). Stevens in 1918. June 30. 
Solidago flexicaulis 1. BROAD-LEAVED GOLDENROD. 
Woods near County Hospital. Stevens in 1915. 
Solidago canadensis 1. CANADA GOLDENROD. 
Prairie and roadsides. Common. Aug. 10 (9). 
Solidago missouriensis Nutt. *RARLY GOLDENROD. 
Along N. P. Ry. (introduced in gravel?). 
Solidago rigida I. STIFF GOLDENROD. 
Prairie and roadsides. Common. Aug, 10 (9). 
Solidago serotina Ait. *TALI, SMOOTH GOLDENROD. 
Edges of woods and thickets, ditches and other low grounds. 
Common. July 25 (25). 
Boltonia -asteroides 1, Her. *FPALSE ASTER. 
Low roadsides and fields. Common. Aug. 5 (3). 
Aster sagittifolius Willd. ARROW-LEAVED ASTER. 
Woods. Occasional; common in aspen on Minnesota side. 
