78 



GENUS ARTEMISIA. 



Goodding 2119 (Gr, NY, UC, US); Red Desert near Creston, Wyoming, Nelson U^6 

 (R, type of A. rhizomata pabularis Nelson, minor variation 73); Laramie, Wyoming, 

 Nelson 6896 (UC, minor variation 72, A. rhizomata Nelson) ; Golden, Colorado, September 

 6, 1919, Hall (CI, includes several forms of leaves, some representing A. brittoni Rydberg, 

 see fig. 12, p. 95); Gunnison, Colorado, Baker 573 (UC, Gr, NY, minor variation 65, 

 A. pudica Rydberg); McPherson, Kansas, September 5, 1890, Kellerman (US) ; Courtney, 

 Missouri (introduced?), Bush 5858 (Gr, NY, US); Woods County, Oklahoma, Stevens 

 2869 (Gr); Colorado, Texas, Tracy 81 41 (Gr, NY, type collection of A. texana Rydberg, 

 minor variation 82) ; vicinity of Saltillo, Coahuila, Palmer 286 (Gr, NY, UC, US, minor 



Fio. 8. 



Portions of the type specimens of Arte- 



misia vulgaris ludoviciana and A. v. gnapho' 

 lodes: a to e, from tracings of the type of 

 ludoviciana; f, from a tracing of the type of 

 gnaphalodes; both types in the Herbarium of 

 of the Academy of Natural Sciences of Phila- 

 delphia. The foliage of a to e is slightly 

 greener above than below, that of / is equally 

 white-tomentose on both faces. All X 1. 



variation 6, A. brittoni Rydberg, so determined by Rydberg); Dona Ana County, New 

 Mexico, Wooton 504 (NY, US, type collection of A. albula Wooton, minor variation 1); 

 Humboldt County, Nevada, Torrey 249 (Gr); Tantillas Canon, San Diego County, 

 California, 1875, Palmer (Gr, minor variation 1, A. albula Wooton); San Jacinto Canon, 

 southern California, Johnston 1847 (NY); Davis Creek, northeastern California, July, 

 1895, Austin (UC); Spokane, Washington, Sandberg 900 (NY, minor variation 67, 

 A. purshiana Besser); Columbia River, Washington, Scouler 234 (NY, type of A. obtusa 

 Rydberg, minor variation 58); Nampa, Idaho, Nelson and Macbride 1081 (DS, Gr, NY, 

 UC, minor variation 67, A. purshiana Besser); Beavermouth, British Columbia, Shaw 

 1153 (Gr); Bozeman, Montana, Blankinship 255 (US); Indian Head, Assiniboia, Macoun 

 10984 (US); Sarcee Reserve, Alberta, Goddard 492 (UC). 



IIA;. Artemisia vulgaris longifolia (Nuttall). — Stems erect, 3 to 10 dm. high, often 

 clustered on a strong woody rootstock; lower leaves narrowly lanceolate or slightly oblan- 

 ceolate, sometimes with a few prominent teeth or lobes; principal leaves linear or very 

 narrowly lanceolate, commonly caudate-attenuate, 5 to 15 cm. long, 0.2 to 0.5 cm. wide, 

 entire (apparently a form with slender lobes grows on gumbo soil, see minor variation 18, 

 A. falcata Rydberg), those of the inflorescence linear-attenuate and much reduced, all 

 leaves loosely floccose and glabrate above (in the typical form), white-tomentose beneath, 

 the margins strongly revolute; inflorescence a strict panicle, 1 to 8 cm. broad; involucre 



