70 TWELFTH ANNUAL REPORT. 



EUPATORIUM, Tourn. Thoroughwort. Boneset. 



E. piirpureiiin, L. Joe-Pye Weed. Trumpet-weed. 

 Common throughout the state. 



E. piirpiireuni, L., var. niaculatuiu, Darl.* Joe-Pye Weed. Trum- 

 pet-weed. 

 Frequent, or common, throughout the state. 



E. altissiiuum, L. Tall Boneset. 



Lapham. Goodhue county, Sanclberg ; Blue Earth county, Leiberg, Gedgc. 

 Rare. South; 



E . perfoliatiiiii, L. Thoroughwort. Boneset. 



Common, or frequent, through the south half of the state ; upper Mississippi river, 

 Garrison ; less frequent farther north to the lake of the Woods, Dawson. Well known 

 as a bitter tonic. 



E. serotimiiii, Michx. Thoroughwort. Boneset. 



Lapham. Todd county (frequent), L'pham; Martin county, and Emmet county, 

 Iowa (common), Cratty. South. 



E. ag-eratoicles, L. f. White Snake-root. 

 Common, or frequent, throughout the state. 



PETASITES, Tourn. (Nardosmia, Cass.) Sweet Coltsfoot. 



P. sag-ittata, Gray.t (N. sagittata, Hook.) Sweet Coltsfoot. 



Red river valley near Saint Vincent (in a "low damp thicket ; in full bloom in the 

 first week of May ; seed nearly ripe, June 4; flower with an odor like that of Cratfegus, 

 white, tinged with purple"), -Dcttf^son; also on Roseau river, .ScoK. Rare. Northwest, 



[P. palmata, Gray, (N. palmata, Hook.j probably also occurs in Minnesota.l 



TUSSILAGO, Tourn. Coltsfoot. 



T. Farfara, L. Coltsfoot. "Ginger-root.'' 



Northeastward, "much used as a cough medicine," Clarh-^ lake Pepin, Miss Man- 

 ning. 



ADENO CAUTION, Hook. Adenocaulon. 



A. bicolor, Hook. Adenocaulon. 



Stearns county. Garrison. Rare. North. 



ASTER, Tourn. Starwort. Aster. 



A. corymbosus. Ait. Aster. 



Hennepin county, Robej-ts. [North of lake Superior, Agassiz.] Infrequent. 



A. macrophylliis, L. Large-leaved Aster. 



Abundant north of lake Superior. Roberts; lake of the Woods, Dawson ; upper 



♦EUPATORIUM purpureum, L , var. maculatum, Darl. Common in open ground, 

 3 or 4 feet high, often roughish-pubescent : stem commonly purple, striate or sulcate ; 

 leaves somewhat rugose, 3— 5-nate : inflorescence more compact and depressed. . . 

 . . The most widely distributed form. Gray's Synoptical Flora of 1^ . A. 



t PETASITES SAGiTTATA, Gray. Lcavcs from deltoid-oblong to reniform-hastate, 

 from acute to rounded-obtuse, repand-dentate, very white-tomentose beneath, when 

 full grown 7 to 10 inches long : heads short-racemose, becoming corymbose: ligules 

 equalling or shorter than the disk. Gray's Synoptical Flora of N. A. 



