CATALOaUE. 199 



teeth towards the base ; upper ones smaller and passing into subulate bracts, 

 (always?) auriculate with 2 minute teeth; heads peduncled, irregularly 

 corymbose-paniculate, 3" long, 3-9-flowered ; involucre as in the last ; achenia 

 linear, straight, shghtly enlarging upward, strongly 5-angled and with a 

 double row of tubercles between the angles ; pappus usually of 15 setee, 

 plumose from near or below the middle to the top, 3 from each angle of the 

 achenium, with their shghtly dilated bases commonly united. — The setae are 

 sometimes plumose for the greater part of their length, and the dilation at 

 their base is scarcely greater than in 8. 2'>aniculata, which has, moreover, 

 quite as rugose and tubercled an achenium ; it seems, therefore, advisable to 

 merge Hemiptilium into 8tephanoj7ieria. California to Colorado and New 

 Mexico ; Virginia City, (Bloomer.) Foot-hills throughout Nevada, and on 

 Carrington Island, Great Salt Lake; 4,500-6,000 feet elevation ; June- August. 

 Plate XX. Figs. 6 and 7. Achenium and three united bristles of the 

 pappus; magnified twelve diameters. (701.) 



Stephanomeria PENTACHiETA. Annual (?) ; stem 1° high, perfectly glab- 

 rous, and whitish, diffusely branching ; leaves linear-subulate, auriculate with 

 small teeth, or the larger ones runcinately toothed, the uppermost minute and 

 bractlike ; heads 5-flowered, peduncled, panicled, 3-4" long ; involucre of 5 

 scales, besides 4-5 bractlets ; achenia linear-oblong, 5-costate, with a double 

 row of tubercles between the costse ; setae of the pappus 5, one at each angle 

 of the achenium, rather longer than the achenium, slightly dilated and 

 setulose at the base, the upper half plumose. — Truckee and Humboldt Val- 

 leys ; 4,500 feet elevation ; September. Plate XX. Fig. 8. A small branch; 

 natural size. Figs. 9 and 10. Achenium and seta ; magnified twelve diame- 

 ters. (702.) 



HiEEACiUM ScoiTLERi, Hook. Stcms 1-3° high, hispid and almost 

 shaggy with coarse spreading hairs, (3-4" long,) leafy ; lower leaves 5-8' 

 long, 9-12" wide, oblanceolate, mostly acute, sessile or nearly so ; upper ones 

 usually few and smaller ; heads 6' long, in a somewhat rounded panicle ; 

 peduncles erect ; involucre calyculate or somewhat imbricated, glandular- 

 puberulent and sparsely hairy ; flowers yellow, about 20 ; achenia not nar- 

 rowed at the summit. — A coarse plant, in appearance between H. Gronovii 

 and H. longipilujii. The stem is leafy in some specimens, in others nearly 

 naked. Nutka to Oregon. Goose-Creek Mountains, and in the canons of 



