STATE GEOLOGIST. 85 



A. tlracunculoides, Pursh. Wormwood. 



Common through the south half of the state, and probably occurring also, but less 

 frequently, in the Red river valley ; extending northeast to Crow Wing and Todd coun- 

 ties, TJpham. 



A. borealis, Pallas. Wormwood. 



Upper Mississippi river, Garrtsoft. North. [Probably the var. Wormskioldii, 

 Bess., which is taller, lo to 16 inches high, with more numerous heads in looser or com- 

 pound narrower thyrsus. Ch'ay's Synoptical Flora of N. A.] 



A. Canadensis, Michx. Wormwood. 



Lake Superior to sources of the Mississippi, Houghton, Garrison; lake of the Woods« 

 Dawson; Bed river valley, Scott; White Bear, Ramsey county, Kelley. North. 



A. caudata, Michx. Wormwood. 



Common through the south half of the state ; abundant (frequently having galls) in 

 the Red river valley, Upham. 



A. serrata, Nutt.* Wormwood. 



Prairies and low grounds, Illinois to Dakota; first collected by Nuttall. (Gray's 

 Synoptical Flora of N. A.) 



A. longifolia, Nutt.f Wormwood. 



Rocky banks, Minnesota and Nebraska to Saskatchewan and Montana ; first col- 

 lected by Nuttall, or by Lewis and Clai'ke. (Gray's Synoptical Flora of N. A.) 



A. liUdoviciana, Nutt. Western Mugwort. "Sage." 



The form with incised or subpinnatifid leaves is occasionally found through the south 

 half of the state and in the Red river valley, Upham. This is not regarded by Gray's 

 Synoptical Flora as distinct from the form with undivided leaves (var. gnaphalodes, in 

 Manual), which has been noted as follows : Minneapolis, Roberts; Blue Earth county, 

 Leiberg; abundant in Martin county, and in Emmet county, Iowa, Cratty; Red river 

 valley (common), Upham, Scott. (Hr. Arthur states that the first of these forms is 

 infrequent or rare in Iowa ; but that the seeoud is common there. Specimens of this 

 species sent by Prof. Oedge from Marshall, Lyon county, In rich soil near the Redwood 

 river, have the broadly lanceolate leaves all entire oronly sparingly toothed, with their 

 upper surface nearly glabrate and green ; as is said by Gray's Synoptical Flora to be 

 sometimes their condition.) 



A. biennis, Willd. Biennial Wormwood. 

 Frequent, often common, throughout the state. 



A. Absinthium, L. Common Garden Wormivood. 



Lapham. Blue Earth county, Lcibcrgr. Rarely ad ventive. 



Artemisia glauca. Pall. Minutely silky pubescent or canescent, sometimes 

 glabrate and glaucous: stems strict, a foot or two high, somewhat woody at base : leaves 

 rather short, from linear- to oblong-lanceolate, mostly entire, occasionally some 3-clef t, 

 or the lowest even more divided : heads nearly of the next, into which it probably 

 passes. Oray's Synoptical Flora of N. A. 



♦Artemisia serrata, Nutt. Stems 6 to 9 feet high, very leafy ; leaves green and 

 glabrous above, white-tomentose beneath, lanceolate or uppermost linear, 3 to 7 inches 

 long, all serrate with sharp narrow teeth, pinnately veined, the earliest sometimes 

 pinnately incised : heads amply paniculate, rather few-flowered, less than two lines 

 long, greenish, hardly pubescent. Gray's Synoptical Flora of N. A. 



+ARTEJIISIA LONGIFOLIA, Nutt. Stem 2 to 5 feet high : leaves entire, at first tomen- 

 talose, but usually glabrate above, white tomentose beneath, linear or linear-lanceolate 

 (3 to 7 Inches long, 1 to 5 lines wide) ; veins obsolete : heads amply paniculate, usually 

 canescent, 2 to 3 lines long. Gray's Synoptical Flora of iV. A. 



