184 GENUS CHRYSOTHAMNUS. 



UC, US, similar variation but with bracts of minor variation 29); Georgetown, south- 

 western Colorado, Jones 744 (NY, US, same variation) ; near Grand Junction, Colorado, 

 August 27, 1896, Greene (Herb. Greene, type of C. leucocladus Greene, minor variation 

 20); Salt Lake Valley, Utah, (NY, type collection of Linosyris serrulata Torrey, minor 

 variation 42) ; Oquirrh Mountains, Tooele County, Utah, W. W. Jones 479 (Gr) ; west 

 of Buckskin Mountains, Arizona, Jones 6063g (US) ; Lee Canon, Charleston Mountains, 

 southwestern Nevada, Heller 11087 (Gr, NY, US); San Jacinto Mountain, southern 

 California, Nemn (DS); Truckee, California, Heller 7189 (DS, NY, US); Bear Buttes 

 Pass, Oregon, Leiberg, 795 (Gr, UC); Fish Hook Ferry, Oregon, Leiberg 926 (UC); 

 Redmond, Oregon, September 29, 1918, Whited (UC, minor variation 38); Spokane 

 County, Washington, Suksdorf 925 (Gr) ; Mackay, Custer County, Idaho, Nelson and 

 Macbride 1559 (DS, Gr, UC); Flint Creek, Owyhee County, Idaho, Macbride 490 

 (DS, R). 



5/t. Chrysothamnus viscidiflorus latifolius (Eaton). — Shrub 3 to 10 dm. high; 

 leaves broadly elliptic or broadly lanceolate, obtuse but mucronate, 2 to 4 cm. long, 

 6 to 12 mm. wide, 3- or 5-nerved, plane, bright green, entire, glabrous or the margins 

 merely scabrous; cyme either broad and lax or small and dense, its branches glabrous; 

 involucre 6 to 7 mm. high; bracts not keeled, obtuse or acute, without subapical spot; 

 achenes densely villous. {Linosyris viscidiflora var. latifolia, Eaton, Bot. King's Expl. 

 157, 1871.) Southern Idaho and western Utah across Nevada to eastern California 

 and Oregon. Type locality, mountains at the head of Humboldt River, Nevada, at an 

 altitude of 2,000 to 2,200 meters. Collections: Type collection, September, 1868, 

 Watson 568 (Gr, NY, US); West Humboldt Mountains, Nevada, Heller 10626 (DS, Gr, 

 UC, US); Gold Creek, Elko County, Nevada, Kennedy 4398 (UC); Modoc County, 

 California, Gilman 520 (UC). 



bi. Chrysothamnus viscidiflorus linifolius (Greene). — Shrub 8 to 24 dm. high; 

 leaves lanceolate to oblong-lanceolate, gradually acute, 2 to 5 cm. long, 4 to 8 mm. wide, 

 mostly 3-nerved, plane, bright green, glabrous, entire or only obscurely scabrous on the 

 margins; cyme broad, lax, its branches glabrous; involucre 5 to 6 mm. high; bracts 

 oblong, not keeled, obtuse, at least the outer with a thickened subapical spot, this green 

 but drying to brown; achenes densely villous. (C. linifolius Greene, Pittonia 3:24, 

 1896.) On low, alkaline lands, Wyoming, western Colorado, Utah, and New Mexico. 

 Type locality, in moist, alkaline soil, plentiful along a streamlet near Rock Springs, 

 Wyoming. Collections: Type collection, August 9, 1895, Greene (Herb. Greene); Bitter 

 Creek, Wyoming, Nelson 41 43 (UC); Grand Junction, Colorado, Baker 924 (Gr, NY, 

 UC, US); southeastern Utah, Rydberg and Garrett 9437 (UC); Rabbit Valley, Utah, 

 Ward 573 (Gr) ; Cainville, Utah, Jones 5698 (NY) ; near Farmington, San Juan County, 

 New Mexico, Standley 6903 (US). 



MINOR variations AND SYNONYMS. 



1. BiGELOviA DOUGLASI Gray, Proc. Am. Acad. 8:645, 1873. — C. viscidiflorus typicus. 



2. B. DOUGLASI var. lanceolata Gray, Syn. Fl. 1=:140, 1884. — C. viscidiflorus lanceolatus. 



3. B. DOUGLASI var. latifolia Gray, Proc. .\m. Acad. 8:646, 1873. — C. viscidiflorus lalifolius. 



4. B. DOUGLAS! var. puberula Gray, 1. c. — C. viscidiflorus puberulus. 



5. B. DOUGLASI var. pumila Gray, Syn. Fl. P:140, 1884. — C. viscidiflorus pumilus. 



6. B. DOUGLASI var. serrulata Gray, Proc. Am. Acad. 8 : 646, 1873.^-Same as Linosyris viscidiflora 

 serrulata, q. v. 



7. B. DOUGLASI var. spathulata Jones, Proc. Calif. Acad. II, 5:690, 1895. — Authentic material not seen, but 

 apparently a form of C. viscidiflorus lanceolatus with short lower leaves. 



8. B. DOUGiAsi var. stenophylla Gray, 1. c. — C. viscidiflorus stenophyllus. 



9. B. DOUGLASI var. tortifolia Gray, 1. c. — C. viscidiflorus and its subspecies. First applied to plants 

 similar to subspecies typicus, but with the leaves twisted upon themselves, later extended by various writers 

 to other subspecies in which this trait was noticed and even used by some as of specific value. The tendency 

 toward torsion is sometimes indicated only by an undulation of the margins and all degrees are encountered from 



