162 
BOTANY. 
ascending or erect from a fusiform caudex ; radical leaves 2-3' long, lanceo- 
late or linear, acuminate, narrowed into a petiole, laciniately pinnatifid ; 
cauline ones smaller, toothed, the uppermost entire and bractlike ; heads 
solitary or with 1-2 lower ones on short peduncles, 8-12" broad; involucres 
hemispherical, of many oblong, rather obtuse, herbaceous-tipped scales, 
imbricated in several rows; rays 18-24; style of the disk-flowers with very 
hispid lanceolate appendages nearly twice longer than the stigmatic portion ; 
achenia striate, glabrous ; pappus tawny-white, copious, of unequal scabrous 
bristles, some of the longer ones slightly clavate.— With much of the habit 
of A. la7iceolatus this species has the achenia and pappus of the section 
Pijrrocoma, to which Dr. Gray has referred it. California, (Bolander;) 
Carson City, Nevada, (Anderson.) 
Aplopappus paniculatus. Gray, c. {Pyrrocoma paniculata, T. & G.) 
Glabrous ; stems several, 1° high, nearly erect from a fusiform caudex ; 
radical leaves petioled, oblong-lanceolate, mucronate, obscurely serrulate, 3-5, 
long ; the cauline ones lanceolate from a broad clasping base ; heads several, 
rather large, sessile in the axils of bracteal leaves ; involucres campanulate, 
of many oblong-ovate herbaceous-tipped scales, closely imbricated in several 
rows; rays 10-12, slender; style of the disk-flowers with subulate hispid 
appendages, twice longer but narrower than the stigmatic portion ; achenia 
flattened, nearly glabrous ; pappus tawny-white, of nearly equal scabrous 
fragile capillary bristles.— Oregon, (Nuttall.) Var. virgatus, Gray, /. c. 
Heads more numerous and smaller ; leaves narrowly lanceolate, glaucous, 
entire.— California, (Bolander ;) Carson City, Nevada, (Anderson.) 
A plant much like this species, but of lower stature and with the heads 
somewhat corymbose on slender peduncles and with very tawny pappus, was 
collected near Virginia City by Bloomer. 
Aplopappus Parryi, Gray. Sill. Jour., [n. s.,) 33. 10. Stems erect, 
6-18' high, viscidly puberulent towards the summit, leafy, corymbosely 
branched above ; leaves nearly glabrous ; the lower ones oblong-obovate, 
obtuse, entire, narrowed into a petiole ; the uj^per ones sessile, oblong-ovate 
or oblanceolate ; heads few or many, nearly sessile in corymbed clusters ; 
involucres 4-6" broad, campanulate; the oblong obtuse scales imbricated in 
several rows, chartaceous, the outer ones more foliaceous ; rays 12-20, small 
and narrow, pale-yellow ; disk-flowers numerous ; appendages of the style 
lanceolate, slightly hispid, rather longer than the stigmatic portion ; achenia 
