22 
CALLIRRHOE, Nutt. 
158. c. triangulata, Gray. Callirrhoe. 
Sandy and prairie soil; infrequent or rare. July. 
Niles. South Chicago. Englewood. Hyde Park. Palatine. 
Graceland, Babcock ! 
Pubescence varies from slightly hairy to almost hirsute. 
ABUTILON, Tourn. 
159. A. avicennje, Gaertn. Velvet Leaf. Indian Mallow. Cotton-weed. 
Sparingly escaped from gardens into waste places; spontaneous. 
June — July. 
HIBISCUS, L 
160. H. moscheutos, L. Swamp Rose Mallow. 
Shores of ponds. 
Whiting, Indiana, 1880, Hill. (B.) 
161. H. militaris, Cav. Halbert-leaved Rose Mallow. 
Banks of the Desplaines river, near Maywood, Munroe! (B.) 
TIL.IACEJE. 
TILIA, Tourn. 
162. T. americana, L. Basswood. Whitewood. Lime-tree. 
Rich woods and banks of streams; hardly common. May. 
LINACEiE. 
LiINUM, Tourn. 
168. L. virginianum, L. Flax. 
Dry, sandy woods; frequent. Last of July. 
South Chicago, Grand Crossing, and south to limits; rare else- 
where. 
164. L. sulcatum, Riddell. Flax. 
Found with the last; rare. July. 
The styles may be free or somewhat united at the base. 
165. L. u sit atis simum , L. Common Flax. 
Sparingly spontaneous in old, dry fields, and along railroads. June 
—July. (P.) 
GERANIACEiE. 
GERANIUM, Tourn. 
166. G. maculatum, L. Wild Cranesbill. 
Woods and fields; abundant. May — June, and occasionally in 
August. 
Flowers sometimes white, but not from age. Variable in color. 
Easily cultivated when potted. 
