CATALOGUE. 157 



bose or panicled ; involucre oblong, 4" long, 1" wide, the scales few, carinate, 

 glabrous, 5-ranked, imbricated in about 3 series, the outer ones very short, 

 the innermost linear, half as long as the briUiant yellow flowers ; appendages 

 of the style Hnear-subulate, longer than the stigmatic portion; achenia 

 hairy ; pappus of very fine bristles, nearly as long as the corolla. — Plains of 

 the Upper Platte and Colorado to California, Arizona and New Mexico ; 

 Mount Davidson, etc., (Bloomer.) Western Nevada to Salt Lake, often very 

 abundant; 4,500-6,000 feet elevation; July-October. Inflorescence less 

 corymbose and branches greener than in Bolander's 6143 from Mono 

 Lake. (564.) 



Var. /9., T. & G. "Leaves and the\)utermost scales of the involucre, as 

 well as the branches, more or less tomentose-pubescent." — Thousand Spring 

 Valley, Nevada, and in the Wahsatch ; 5,500-7,000 feet elevation. Heads 

 in dense corymbs. (565.) 



LiNOSYEis visciDiFLOEA, T. & Gr. Shrubby, a dense bush, 1° high, 

 (2-4°, Hook. ;) older branches with a gray bark ; younger ones smooth, 

 slightly angled ; leaves narrowly linear, 1-nerved, 8-12" long, i-1" wide, 

 glabrous; heads small, 5-6-flowered, the clusters in dense flat corymbs; 

 involucres 2j-3" long, obconic, of loosely imbricated glabrous often resinous 

 or glutinous oblong-linear obtuse scales, the outer ones very short ; corolla 

 at first scarcely exserted, but as the achenium grows it considerably ex- 

 ceeds the involucre ; style as in the last ; achenia hairy ; pappus of rather 

 rigid and scabrous setee. — Washington Territory, Oregon, and California to, 

 Colorado. East Humboldt Mountains, and eastward in Nevada ; 6,000-7,000 

 feet elevation ; July-September. (666.) The above character is intended 

 for the typical form only ; several other forms occur in the collection. 



Var. SERRULATA, Torr., in Stansh. Rep., ed. 2., p. 389. Leaves linear- 

 oblong, nearly 2'' wide, 3-nerved, scabrous-ciliolate. — Valley of Great Salt 

 Lake, (Stansbury;) California, (Brewer;) Western Nevada, (Bloomer;) 

 Colorado, (49 Parry, 295 Hall & Harbour.) West Humboldt Mountains, 

 and on a ridge at the mouth of American Fork Canon, Wahsatch Moun- 

 tains, Utah; 5,500 feet elevation. (567.) 



Var. LATIFOLIA. Glabrous ; leaves lanceolate-oblong, 12-18" long, 3-5" 

 wide, 3-nerved or indistinctly 5-nerved, mucronulate; involucral scales acute ; 

 heads 5-7-flowered. — Possibly a distinct species, but Parry's 49 of the col- 



