CATALOGUE. 151 



to Nebraska. Salt Lake Valley, and Parley's Park, "Wahsatch Mountains ; 

 4,300-6,000 feet elevation ; June, July. (539.) To this species is also re- 

 ferred a plant with shorter and broader rays, rather broader leaves, and a 

 coarser pubescence, apparently as near to E. hellidifolium as to E. glabellum. 

 Meadow near head of Cottonwood Canon, Wahsatch ; 8,500 feet elevation; 

 July. (540.) 



Eeigeeon pumilum, Nutt. Very hirsute with spreading hairs ; stems 

 6-10' high, often many from an erect branching perennial caudex, simple and 

 monocephalous or with 2-3 peduncled heads, leafy ; lower leaves linear-spat- 

 ulate, 2-2 j' long, 1" wide, upper ones narrowly linear, passing into subulate 

 bracts ; heads about 1' broad ; involucres of many subequal narrow linear hir- 

 sute scales ; rays white ; aV wide, twice or nearly 3 times as long as the invo- 

 lucre ; achenia slightly hairy ; outer pappus of minute subulate bristles. — 

 Plains of Dakota and Nebraska to New Mexico. Valley of Great Salt Lake ; 

 May, June. (541.) 



Eeigekon concinnum, T. &. Gr. Canescent with harsh spreading hairs ; 

 stems 6-10' high, often several from an erect perennial caudex, leafy, branch- 

 ing ; lower leaves linear-spatulate, 3' long, 1-14" wide, upper ones linear ; 

 heads 10-12" broad ; involucre of many very narrow hirsute or pubescent 

 scales ; rays blue, to' wide, as long as in the last or longer ; achenia hirsute ; 

 outer pappus of narrow squamellse. — Oregon to Utah ; Salt Lake Valley, 

 (Stansbury.) Havallah Mountains and Ruby Valley, Nevada; 5,500-6,000 

 feet elevation ; June, July. (542.) 



Var. CONDENSATUM. Stems low, 2-3' high, mainly monocephalous, very 

 numerous and crowded from a stout woody branching caudex ; leaves 1-1 4' 

 long, 4-1" wide, somewhat rigid and exceedingly hirsute ; outer pappus of 

 rather wide rigid and slightly toothed squamellse. — Ridge at Roberts' Station, 

 6,000 feet, and East Humboldt Mountains, 8-9,000 feet altitude; July. (543.) 



Var. APHANACTis, Gray. Proc. Amer. Acad., 6. 540. Like the type, but 

 the rays much reduced and shorter than the style. — Carson City, (Anderson.) 

 Virginia City, (Bloomer.) Foot-hills near Unionville, and mountain-side 

 above Sulphur Spring Station, Nevada ; 5-6,000 feet elevation ; June, 

 July. (544.) 



Eeigekon Bkeweei, Gray. Proc. Amer. Acad, 6. 541. "Minutely cine- 

 reous-pubescent ; stems 9-12' high, leafy to the top, rising from a slender 

 creeping rootstock ; leaves oblanceolate or linear-spatulate, (1' long, 1" wide,) 



