LIST OF HIGHER SEED PRODUCING PLANTS. 559 
Fl. Minn. 88; Chap., Fl. S. St. 247; Mac., Fl. Can. I, 270; Gray, Syn. Fl. I, 
2, 405. 
North America: Newf., Anticosti, N. S., N. Br. to 
Saskatchewan and Minn.; S. to N. Eng., N. J., Va., Fla. and 
La. 
Minn. valley: Forest district; swamps and near lake 
shores. 
HersB.: Bailey 33, Vermilion lake; Sundberg 350, 
Goodhue Co.; Taylor 700, Minnesota lake. 
Cnicus discolor Muni. Willd Spec. ITI, 1670 (1803). 
Carduus discolor Nutr. Gen. IT, 130 (1818). 
Cirsium discolor SPRENG. Syst. III, 373 (1826). 
(1883) Cnicus altissimus var. discolor GRAY, Proc. Am. Acad. XIX, 57 
1 is . 
Wats. and Coult., Gray’s Man. 6 ed. 296; Chap., Fl. S. St. 247; Mac.., 
Fl. Can. I, 270; Webb., Fl. Neb. 144; Upham, Fl. Minn. 88; Britt., Fl. N. J. 
151; Cov., Fl. Ark. 198; Gray, Syn. Fl. I, 2, 404. 
North America: N Eng. and Ont. to Minn. and Neb.; 
S. to N. J., Ill., Mo., Ark. and Va 
Minn. valley: N. districts; meadows, fields, copses 
and low thickets. 
Hers.: Ballard 761, Waconia; Taylor 741, Glenwood; 
Herrick 175, Minneapolis; Oestlund 104, Minneapolis; Kassube 
144, Minneapolis. 
Cnicus altissimus (LINN.) WILLD. Spec. III, 1671 (1803). 
Carduus altissimus LINN. Spec. 824 (1753). 
Cirsium diversifolium DC. Prodr. VI, 640 (1837). 
Wats. and Coult., Gray’s Man. 6 ed. 296; Britt., Fl. N. J. 151, in var.; 
Webb., Fl. Neb. 144; Upham, Fl. Minn. 88; Mac., Fl. Can. I, 270 in var.; 
Coult., Fl. Colo. 214; Chap., Fl. S. St. 247; Cov., Fl. Ark. 198; Gray, Syn. Fl. 
I, 2, 404; Coult., Fl. Tex. 243. 
North America: Mass. to Minn. and Neb.; S. to Miss., 
N. Car., Fla., Ark. and Tex. 
Minn. valley: S. central,.S. W., W. and N. W. dis- 
tricts; fields and borders of thickets or streams. 
Heres.: Taylor 1026, Glenwood; Taylor 728, Glenwood; 
Herb. Wickersheim 85, Ash lake, Lincoln Co.; Herb. Moyer 154, 
Chippewa river, near Montevideo. 
Cnicus undulatus (Nurt.) Gray, Proc. Am. Acad. X, 42 
(1874). 
Carduus undulatus NutTT. Gen. II, 130 (1818). 
C. discolor Hoox. FI. Bor.-Am. I (1833) in part. 
C. douglasiti DC. Prodr. VI, 643 (1837). 
C. hookerianum Hook. Lond. Journ. Bot. VI, 253 (1854). 
Wats. and Coult., Gray’s Man. 6 ed. 296; Webb., Fl. Neb. 144; Mac., 
Fl. Can. I, 269; Upham, Fl]. Minn. 88; Coult., FJ. Colo. 214; Brew. and 
