C. \aSCIDIFLORUS. 183 



Silvies Valley, eastern Oregon, Cusick 2052 (UC, distributed as Bigelovia douglasi var. 

 pumila); Carters, western middle Nevada, August 17, 1906, Eastwood (SF). 



5e. Chrtsothamnus viscidiflorus stenophyllus (Gray). — Shrub 1 to 3 dm. high; 

 leaves very narrowly linear or linear-filiform, rigidly acute, 1 to 3 cm. long, 1 mm. or 

 less wide, 1-nerved, often tortuous, pale green, viscidulous or glandular, the margins 

 usually scabrid and revolute, the faces glabrous; cyme small, compact, its branches 

 glabrous; involucre 4 to 6 mm. high; bracts lance-oblong, strongly 1-nerved, not keeled, 

 abruptly acute or mucronate, devoid of subapical spot; achenes densely strigose. 

 {Bigelovia douglasi var. stenophylla Gray, Proc. Am. Acad. 8:646, 1873.) Dry ridges 

 and stony slopes: Montana and Wyoming to New Mexico, southern California, eastern 

 Oregon, and Idaho. Type locality, northwestern Nevada. Collections: Livingston, 

 Montana, September, 1901, Scheuber (US); Centennial Valley, Wyoming, Nelson 1847 

 (R, type of C. pumilus varus Nelson, minor variation 27); Point of Rocks, Wyoming, 

 Nelson 8142 (Gr, NY, US); type collection, Huntington Valley, at 1,830 m. altitude, 

 northwestern Nevada, August, 1868, Watson 566 (Gr, NY, US); San Antonio Desert, 

 Nevada, Purpus 6415, in part (UC); Candelaria, western Nevada, Shockley 310 (UC, 

 US) ; vicinity of Cedar Hill, San Juan County, New Mexico, Standley 7977 (US) ; Bill- 

 ings, Montana, Jones 4512 (NY, US); Bear Valley, San Bernardino Mountains, Cali- 

 fornia, Grinnell 73 (UC, leaves 3-nerved and plants otherwise approaching subspecies 

 pumilus) ; near Christmas Lake, southeastern Oregon, Leiberg 779 (Gr, US) ; Big Butte 

 Station, Idaho, Palmer 488 (NY, US). 



5/. Chrtsothamnus viscidiflorus elegans (Greene). — Low shrub, 1 to 4 dm. 

 high; leaves linear, pungently acute, 1.5 to 3 cm. long, 1 to 2 mm. wide, mostly 3-nerved, 

 usually much twisted, green, scabrid-ciliolate, the upper also puberulent on the faces; 

 cyme small, compact, its branches densely puberulent ; involucre about 5 mm. high ; 

 bracts lanceolate, keeled, acute or the inner ones obtuse, with an obscurely thickened 

 greenish or brownish subapical spot; achenes strigose. (C. elegans Greene, Erythea 

 3:94, 1895.) Plains and dry valleys, western Wyoming to Colorado, Arizona and Nevada; 

 probably also in New Mexico, but aU specimens seen from there and labeled elegans are 

 glabrous and belong to subspecies typicus. Type locality, Gunnison Valley, Colorado. 

 Collections: West of Evanston, Wyoming, September 13, 1919, Hall (CI); near Flo- 

 rissant, Colorado, September 2, 1919, Clements (CI); type collection, 1890, Greene 

 (Herb. Greene, UC) ; Doyles, west central Colorado, Baker 643 (DS, Gr, NY, UC, US, 

 some leaves glabrous); between Gunnison and Parlin, Colorado, September 1, 1918, 

 Hall (UC); Grand Canon of the Colorado, Arizona, August, 1887, Allen (NY); Ely, 

 Nevada, A. E. Hitchcock 1219, in part (US). 



5^. Chrsysothamnus viscidiflorus typicus. — Shrub usually 5 to 12 dm. high; 

 leaves narrowly lanceolate or broadly linear, acute, 2 to 5 cm. long, 2 to 5 mm. wide 

 (rarely only 1 mm.), 1-nerved in the original form, but often 3-nerved, either plane or 

 twisted, bright green or bluish-green, the margins entire or scabrous-ciliolate, glabrous, 

 viscid; cyme broad, open, its branches glabrous but glutinous; involucre 5 to 7 mm. 

 high; bracts boat-shaped, not keeled, obtuse but commonly mucronate (acute in minor 

 variation 29, C. stenolepis Rydberg), without subapical spot; achenes densely villous. 

 (Crinitaria viscidiflora Hooker, Fl. Bor. Am. 2:24, 1834.) Dry plains and hillsides, 

 often among rocks, from Montana to Wyoming, Colorado, Arizona, eastern California, 

 and Washington. Type locality, on the barren plains of the Columbia, from the Great 

 Falls to the mountains, and along the Salmon River, Northwest America. Collections 

 (with leaves mostly 3-nerved): Fridley, Montana, Rydberg and Bessey 5044a (Gr); 

 Chimney Rock, Medicine Bow Mountains, Wyoming, Nelson 2054 (R. type of C. 

 glaucus Nelson, minor variation 16); Laramie Hills, Wyoming, Nelson 6308 (Gr, NY, 



