226 
IOWA ACADEMY OF SCIENCES. 
289. A. brachycarpa (Torr. & Gray) Britton. (A. confinis 
S. Watson; A. drummondii Gray.) Common in 
dry woods. 
Erysimum L. 
290. E. cheiranthoides L. Worm-seed. Common in 
woods. 
CAPPARIDACE^:. 
JPol ANISIA Raf. 
291. P. trachysperma Torr. & Gray. Common along 
shores of lakes, growing in sand. The plant has 
a strong, offensive odor. 
CRASSULACE^. 
Penthorum L. 
292. P. sedoides L. Common in low ground and 
marshes. 
SAXIFRAGACE^E. 
Heuchera L. 
298. H. hispida Pursh. Dry prairies; infrequent. 
Parnassia L. Grass of Parnassus. 
294. P. caroliniana Michx. A very pretty plant, once 
common on low prairies, but rapidly disappear- 
ing. 
GROSSUL ARIACE^E . 
Ribes L. 
295. R. cynosbati L. Prickly Gooseberry. Infrequent 
in woods. 
296. R. gracile Michx. Smooth-fruited Gooseberry. Very 
common in woods. The fruit sometimes sold 
in the market. 
297. R. floridum L’Her. Wild Black Currant. Very 
common in woods. The fruit, resembling the 
black currant of the garden in flavor, is liked 
by some people. 
ROSACEA. 
Spiraea L. Meadow-sweet. 
298. S. salicifolia L. A pretty little shrub, common in 
woods, and low prairies. 
