12 
83. S. officinale, Scop. Hedge mustard. j £ 
Cultivated fields; infrequent. May — Aug. (B.) 
BRASSICA, Tourn. 
84. B. sinapistrum, Bois. Charlock. Field Mustard. 
Sin apis arvensis , L. 
Fields; infrequent. May— August. (B.) 
85. B. nigra, Koch. Black Mustard. Scurvy. 
Sinapis nigra , L. 
Roadsides, cultivated grounds and waste places; infrequent. July 
—Aug. (B.) 
J 
CAPSELLA, Medic. 
86. C. bursa-pastoris, Moench. Shepherd’s Purse. Toy Wort. Pick- 
purse. 
Abundant. April — September. 
This is one of the few cosmopolitan plants that flourish alike amid 
Alpine snows and the high temperature of the equator. 
LEPIDITJM, Turn. 
87. L. virginicum, L. Wild Pepper-grass. 
Roadsides and fields, in sandy soil; frequent. June — Aug. 
Sometimes continues in flower until the middle of November. 
88. L. intermedium, Gray. Pepper grass. 
Dry fields, and sandy prairies; common. July — Aug. 
89. L. campestre, R. Br. Pepper-grass. 
Evanston, 1886. Colehour, Ind., 1888. Englewood, near C. P. & 
Ft. W. R. R., 1880, Hill. (B. P.) 
90. L. sativum, L. Pepper-grass. 
Spontaneous in ditches at Englewood, July, Hill. (B. P.) 
CAKILE, Tourn. 
91. C. Americana, Nutt. American Sea Rocket. 
Sandy soil; not common. June — Sept. 
Lake shore, both north and south of Chicago. 
CAPPABIDACEJE. 
POLENASIA, Raf. 
92. P. graveolens, Raf. Heavy-scented Polenasia. 
Near the lake shore; not frequent. July — Aug. 
East of Woodlawn, Bastin. Normal Park, Brennan . Englewood, 
Hill. Evanston. 
K 
CLEOME, L. 
93. C. integrifolia, T. & G. 
