CATALOGUE. 
139 
alous ; leaves very rigid, somewlmt alternate, subsessile, ovate-lanceolate, 
spinulose-acuminate and few-toothed, 3-nerved ; the nerves and veins curved 
upward, anastomosing and rather prominent; both surfaces alike, scabrous 
and sprinkled with minute globules; peduncles 1-2-bracteolate, twice or thrice 
longer than the manj-flowered (half-inch-long) heads ; scales of the bell- 
shaped involucre in few rows, the outer scales ovate- the inner linear-lanceo- 
late, all suddenly acuminated ; achenia slightly hirsute along the ridges ; setae 
of the pappus about 20, very faintly barbellate, at least near the base. — Utah, 
near the Eio Colorado, 1870, (Dr. E. Palmer.) Leaves less than an inch 
long, coriaceous and rigid, tapering into a spinulose point and beset with a 
few rigid spinulose teeth. This species would naturally be associated with 
B. spinulosa of Northern Mexico, but it has forty or more flowers in the head 
and a minutely barbellulate or above merely scabrous pappus." — Gray, /. c. 
Aster adscendens, Lindl. "Stems low, ascending; the branches simply 
racemose or somewhat corymbose ; radical and lower leaves oblong-linear or 
narrow spatulate, glabrous, entire, with cihate-scabrous margins ; the cauline 
linear-lanceolate, partly clasping; scales of the hemispherical involucre nu- 
merous, closely imbricated, unequal, nearly glabrous; the exterior linear- 
oblong, obtuse, the innermost acute ; achenia minutely hairy." T. ^ G. 
Saskatchewan and along the Eocky Mountains to Colorado, (Yasey, 251.) 
Var. Parryi. Stems 1-2° high, often corymbosely much branched; lower 
leaves large, broadly oblanceolate, 5-12' long, 1-2' wide, narrowed into winged 
petioles, the upper ones gradually smaller and sessile, partly clasj^ing ; heads 
large ; involucral scales finely ciliate, the outer ones broadly lanceolate and 
herbaceous. — Approaches A. integrifolius^ but the involucre is not glandular. 
Colorado, (417 Parry; 253 Hall & Harbour, in part.) In valleys and along 
creeks, from the East Humboldt Mountains to the Uintas ; July-Octo- 
ber. (497.) 
Aster Nuttallii, T. & Gr. Stems 1-2° high, rather slender, smooth 
or nearly so ; leaves rather rigid, minutely scabrous on the edges and often 
on the upper surface ; the radical and lower ones narrowly lanceolate, 3-4' 
long, 3-4" wide, tapering into a slender petiole ; upper ones narrowly linear 
and passing on the branchlets into subulate bracts ; heads small, terminal on 
the panicled and spreading or somewhat corymbose very slender branchlets ; 
involucres hemispherical-top-shapcd, 3-4" broad at the top in the living plant, 
the scales closely imbricated, linear-spatulatc, obtuse, outer ones very small 
