142 
BOTANY. 
rather long, white ; achenia pubescent— By its dwarf habit this is an Oritro- 
phium^ but the long and lax involucral scales, ioibricafed in several rows, 
point to the Grandiflori for a perhaps more real affinity. Wahsatch Mount- 
ains, above Cottonwood Cailon ; 9,000 feet ahitude ; August. Plate XVI. 
Fig. 1. A plant ; natural size. Fig. 2. A leaf Fig. 3. An outer involucral 
scale. Fig. 4. An inner involucral scale ; enlarged two diameters. Fig. 5. 
A ray-flower ; enlarged four diameters. Fig. 6. Style of the disk-flow^er ; 
enlarged eiglit diameters. (507.) 
Aster glacialis, Nutt, (including A.Andinus, Nutt.) Dwarf; caudex 
woody and often stout, much branched ; stems 2-4' high ; leaves thickish, 
glabrous, the radical ones 1-2' long, 2-4"* \^dde, spatulate, narrowed into a 
long petiole, obtuse or even emarginate ; caulinc ones few, oblong or oblance- 
olate; lieads solitary; scales of the involucre nearly equal, linear-spatulate or 
more or less acuminate, glandular-puberulent or nearly glabrous, commonly 
blackish-purplc ; rays numerous, white or purplish. — High peaks, from tlic 
mountains of Colorado to California. East Humboldt Mountains and North 
Clover Peak, Nevada, at 10,000 feet altitude, and in the Uintas, near Bear 
Ptiver Canon, 9-12,000 feet ; July-September. (508.) Another form, with 
narrowly spatulate leaves about 1' long and not over a line in width, the 
involucral scales long-acuminate, green with reddish tips, was found in the 
East Humboldt Mountains also, and on South Clover Peak. (509.) 
AsTEE ASPERUGiNEus. Stems 2-6' high, simple, ascending from a spar- 
ingly branched woody caudex, like the leaves subcinereous and roughened' 
with a minute scabrous pubescence ; radical leaves roundish-obovatc or spat- 
ulate, narrowed into a long petiole, stem4eaves linear, 1 -nerved ; heads soli- 
tary ; involucre hemispherical ; scales appressed, imbricated in about 2 rows, 
the outer ones oblong, subacute, herbaceous, pubescent with whitish hairs, 
the inner linear, somewhat acuminate, roughened-puberulent ; rays purple ; 
achenia pubescent.— Leaves 3-4" wide, and with the petiole 1-2' long. 
Eidge near Lake Marian, East Humboldt Mountains ; 9,000 feet elevation ; 
August. (510.) 
Aster salsuginosus, Rich. Stems erect, 6-18' high, few from a 
woody caudex, leafy ; radical leaves broadly spatulate or linear-obovate, wdth 
the margined petiole 2-9' long, 4-12" wide, obtuse, glabrous, ciliolate ; cau- 
line ones lanceolate, the uppermost sessile and partly clasping; heads very 
large, single or 3-5 on long peduncles ; scales of the involucre nearly equal, 
