84 TWELFTH ANNUAL REPORT. 



G. pinnatiflda , Ton-.* Gaillardia. 



Red river prairie, Dawgon, West (mostly southwest). [Perhaps more correctly 

 referable to the preceding species.] 



HELENIUM, L. Sneeze- weed. 



H. autumnal e, L. Sneeze- weed. 



Common through the south half of the state and in the Red river valley ; extending 

 northeastward at least to the upper Mississippi river, Garrison. 



ANTHEMIS, L. Chamomile, 



A. Cotula, L. (Maruta Cotula, DC.) Maij-weed. Dog Fennel. 



A common, often abundant, weed in the southern two-thirds of the state ; less fre- 

 quent in clearings of the forest farther north ; also less common westward, and scarce 

 from Ada northward in the Red river valley. 



A.nobilis, L. Garden Chamomile. 



Adventlve, Beaver Bay. Jiini. ^ 



ACHILLEA, Vaill. Yarrow. 



A. Millefolium, L. Common Yarrow or Milfoil. 



Common throughout the state. The following notes describe this species on the 

 north shore of lake Superior : "Abundant all along the shore, forming a fringe of white 

 just on the line between the forest trees and the waves ; was not found in other situa- 

 tions." Juni.— "The rose-colored variety occurs sparingly, showing all shades.of color 

 from white to a quite deep pink." Roberts. 



CHRYSANTHEMUM, Tourn. Chrysanthemum. 



C. Leticanthemum, L. {Leucanthemum vulgare, Lam.) Ox-eye Daisy. White- 

 weed. 



Lake City, Miss Manning; Stillwater, Miss Field; Mankato, Prof. Bechdolt; Min- 

 neapolis (frequent), Roberts; Saint Cloud, Campbell; upper Mississippi river, Garrison. 

 Rare or local ; inclined to spread ; an abundant and pernicious weed in states farther 

 east. 



TANACETUM, Tourn. Tansy. 



T. vulgare, L. Common Tansy. 



Adventive : lake Pepin ; Goodhue county ; Minneapolis ; Blue Earth county ; Em- 

 met county, Iowa. 



T. Huronense_, Nutt. Lake Huron Tansy. 



Upper Mississippi river, Garrisoji. Infrequent. North. 



ARTEMISIA, Tourn. Wormwood. 



A. glauca, Pall.t Wormwood. 



Saskatchewan and Minnesota, Drummond, Nicollet, Kennieott. {Gray's Synoptical 

 Flora of N. A.) 



*Gaillardia pinnatifida, Torr. Perennial, canescent ; stems 8 to 12 inches high, 

 branching ; leaves sessile, pinnatifld, the rachis and remote lobes linear; heads rather 

 small; involucre in about two series, nearly equal to the disk ; rays deeply 3-cleft ; chaff 

 of the pappus lanceolate ; fimbrilliE of the receptacle aristseform,slender, sparse, longer 

 than the achenia. Porter and Conlter's Flora of Colorado.— A showy flower ; heads 1 to 

 2 inches broad ; rays yellow, or purple toward the base ; disk-flowers purplish : leaves 

 1 to 3 inches long. Bat. Rep. of King's Expl. of the Fortieth Parallel. 



+ See description of Artemisia glauca. Pall . , on next page. 



