CATALOGUE. 139 



alous ; leaves very rigid, somewhat 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 many-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 Rio 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, I. c. 



Aster adscendens, Lindl. "Stems low, ascending; the branches simply 

 racemose or somewhat corymbose ; radical and lower leaves oblong-linear or 

 narrow spatulate, glabrous, eiatire, with ciliate-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. 8^ G. 

 Saskatchewan and along the Rocky Mountains to Colorado, (Vasey, 251.) 

 Var. Paeeyi. 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 clasping ; 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.) 



AsTEE 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-shaped, 3-4" broad at the top in the living plant, 

 the scales closely imbricated, linear-spatulate, obtuse, outer ones very small 



