C. PARRYI. 201 



Nelson and Kennedy, Proc. Biol. Soc. Wash. 19:39, 1906.) High mountains of western 

 Nevada and eastern California. Type locality, summit of Mount Rose, Washoe County, 

 Nevada. Collections: Type collection, from 3,320 m. altitude, Kennedy 1171 (UC); 

 Mount Rose, Nevada, at 3,170 m. altitude, Heller 9976 (Gr, NY, UC, US); mountains 

 above Lundy, Mono County, California, Minihorn 224 (UC) ; outlet of Jessie Lake, east 

 side of Mount Dana, California, August 12, 1898, Congdon (UC); Mono Pass, California, 

 Bolander 6135 (Or, with notation, "very low shrub"). 



\\h. Chrysothamnus parryi howardi (Parry). — Plant normally 3 to 6 dm. high; 

 stems spreading at base, but the branches mostly erect; leaves narrowly linear, 2 to 4 

 cm. long, about 1 mm. wide, commonly with straight slender tips, 1-nerved, gray- 

 tomentulose, the uppermost usually overtopping the inflorescence; heads either numer- 

 ous in open racemes or few and terminally glomerate in reduced forms (minor varia- 

 tion 18); involucre 10 to 12 or 13 mm. high; bracts 12 to 20, in rather well defined ranks, 

 keeled by the strong midrib, with usually spreading tips; flowers 5 to 6, rarely 7. {Lino- 

 syris howardi Parry in Gray, Proc. Am. Acad. 6:541, 1865.) On upland slopes and 

 tablelands, Wyoming, western Nebraska, and Colorado; perhaps also in Utah. Type 

 locality, Colorado, on gravelly hills near "Hot Springs" of Middle Park. Collections: 

 Encampment, Carbon County, Wyoming, Goodding 2016 (Gr, Ny, UC, minor variation 

 18); Centennial-Rambler Road, Albany County, Wyoming, Goodding 2072 (DS, Gr, NY, 

 UC, similar variation); canons south of Scotts Bluff, Nebraska, July 24, 1891, Rydherg 

 (NY, US); rolling hills north of Walsenberg, Colorado, Hall 10779; Buena Vista, Colo- 

 rado, Hall 11073 (UC); Villa Grove, San Luis Valley, Colorado, Hall 10785 (UC). 



Hi. Chrysothamnus parryi attenuatus (Jones). — Plant 2 to 6 dm. high; stems 

 mostly erect; leaves narrowly linear, 2 to 4 cm. long, about 1 mm. wide, 1-nerved, not 

 tomentulose but green and somewhat viscid, the upper ones not projecting beyond the 

 inflorescence (in the type specimens); heads in well-developed racemes; involucre 10 

 to 11.5 mm. high; bracts 13 to 15, 5-ranked, keeled, with very slender usually erect 

 tips; flowers 5 to 7. {Bigelovia howardi var. attenuata Jones, Proc. Calif. Acad. II, 

 5:691, 1895.) Utah, southern Colorado, northern New Mexico, Arizona, eastern 

 Nevada, and southern Idaho. Type locality, Marysvale, Utah, at 2,150 meters alti- 

 tude, in clay. Collections: Type collection, August 27, 1894, Jones 5912 (NY, UC, 

 US) ; same locality, Jones 5847a (NY, UC, US) ; Thurber, Utah, Jones 5704, and near 

 Panguitch Lake, Utah, Jones 6994 (both UC, US, and both with the less attenuate 

 bracts of subspecies howardi, and a portion of 5704 with white tomentum of minor varia- 

 tion 15, C. newberryi Rydberg); Wet Mountain Valley, Fremont County, Colorado, 

 Brandegee 748, 749 in part (UC, a form with the bracts less attenuate); Rio Mancos, 

 Colorado, Brandegee 1231 (UC); Canon Largo, New Mexico, September 15, 1859, New- 

 berry (NY, type of C newberryi Rydberg, minor variation 15); Buckskin Mountains, 

 northern Arizona, Jones 6052k (US, same variation) ; Star Peak, Nevada, July 30, 1904, 

 Jones (DS, UC, same variation) ; Challis, Custer County, Idaho, Macbride and Payson 

 3351 (R). 



llj. Chrysothamnus parryi nevadensis (Gray). — Plant 2 to 6 dm. high except in 

 high-mountain forms; stems erect or ascending; leaves 1.5 to 4 cm. long, 0.5 to 3 mm. 

 wide, 1-nerved, either green and resinous-glandular or more commonly gray and copi- 

 ously tomentulose (the two forms sometimes growing together; see minor variation 20), 

 the uppermost seldom exceeding the inflorescence; heads few to numerous, in racemes 

 or narrow panicles; involucre 12 to 15 mm. high; bracts 13 to 18, in definite ranks, 

 strongly keeled, with slender tips which tend to recurve; flowers 4 to 6. {Linosyris 

 howardi var. nevadensis Gray, Proc. Am. Acad. 6:541, 1865.) Uplands and mountains 

 nearly to timber line, eastern Nevada to eastern California and south to northern 



