Wheeler : FLORA OF SOUTHEASTERN MINNESOTA. 415 
Senecio aureus L. Sp. Pl. 870. 1753. 
Coll.: Lyon 54, Winnebago. June. 
Arctium minus Scux. Bot. Handb. 3: 49. 1803. 
Coll.: Wheeler 432, Jefferson. July. 
Carduus lanceolatus L. Sp. Pl. 821. 1753. 
Coll.: Lyon 242, Crooked Creek. July. 
Carduus discolor (Munu.) Nutt. Gen. 2: 130. 1818. 
Coll-: Lyon'377, Jetierson:’ Aug: 
Carduus odoratus (Munv.) Porter. Mem. Torr. Club, 5: 
345-1894. 
Coll.: Herb. Wheeler 25, Winnebago. July. 
DESCRIPTION OF PLATE XXI. 
A. Juniper point, Crooked creek valley. Southwest side of bluff 
dotted with junipers and white birch. 
B. Base of bluff, upper Winnebago valley. White pine, juniper 
and white birch along the upper edge of cliff. * 
PLATE DONT: 
A. Western slope of bluff. The woods follow the areas of greatest 
moisture z. e., the ravines and foot of bluff and the water course in the 
valley. The shrubs in the valley mark the course of a small creek 
and are principally willows and dogwoods. 
£B. Southern slope of bluff showing the steep bare slopes and the 
thickly wooded ravine. The extreme base of the bluff to the left has 
been cleared of timber for cultivation. 
PLATE, XXTIT. 
A. Grove of white birch. 
B. Swamp vegetation. Sfathyema growing in the shade of black 
ash and yellow birch. 
PLATE XXIV. 
A. Group of coffee trees (Gymnocladus). 
ZB. White birch and juniper on side of bluff. 
BREATH AOSV. 
A. Slough and island vegetation. Sagzttar¢as and Nelumébo are 
the most prominent water plants, and willows and cottonwood on the 
island in the background. 
B. General view of river valley from bluffs on Minnesota side of 
river. The river channel is on the farther side at the base of the Wis- 
consin bluffs. 
