Moist woods with Anemone nemorosa, L., which it resembles; com- 
mon. April — May. - A* ./ ! / 
Two specimens found near Niles had the sepals three-lobed; often 
the flowers are doubled, and there may be two or more rows of 
sepals. Specimens with all the stamens and pistils undeveloped 
or changed to sepals are occasionally found. Specimens from 
Niles are usually pinkish, and those with pink and white flowers 
are not uncommon elsewhere. 
Leaves whorled at base of peduncles, Washington Heights, Dodge. 
THALICTRUM, Tourn. 
>^12. T. dioicum, L. Early Meadow Rue. 
Woods, banks, and fence rows; common. May. 
13. T. polygamum, Muhl. Tall Meadow Rue. 
T. cornuti , in Manual, 5th Ed. 
Wet prairies and banks of streams; infrequent or rare. June — Sep- 
tember. ti - ! t ; 
Specimens found near South Chicago measured 11 feet in height. 
The average height is about 5 feet. 
14. T. purpuraseens, L. Purplish Meadow Rue. 
T. cornuti, L., var. purjjurascens, Wood. 
Including var. ceriferum , Austin. 
Dry and usually sandy soil; frequent. May — June. 
In some seasons the staminate form is far more abundant than the 
pistillate. 
In woods near Whiting, Ind., a form with the following character- 
istics is found: Polygamous; intermediate between T. purpuras- 
cens and T. cornuti; filaments white; stamens at first drooping 
but little; anthers mucronate; 8 to 5 feet high, Hill. 
MYOSURUS, Dill. 
15. M. minimus, L. Mouse-tail. 
Prairies; rare. 
Evanston, July, 1886. (B.) 
RANUNCULUS, Tourn. 
16. R. circinatus, Sibth. Stiff Water Crowfoot. 
R. divaricatus, in Manual, 5th Ed. 
R. aquatilis, L., var. stagnatilis , DC. 
South Chicago; rare. June, 1888, 1884, 1886. 
Streams near Lake Calumet; rare, 1885. 
Sheffield, Ind. ; frequent. (B.) 
