CATALOGUE. 153 
E.fiUfolium and E. ochroleucum, which it resembles in habit, although the 
much imbricated involucre and the almost lanceolate appendages of the 
style show a very close approach to Astei: (547.) 
Erigeron c^spitosum, Nutt. ''Dwarf, canescent with a close and 
short pubescence ; stems numerous from a thickened caudex, csespitose, 
decumbent, mostly simple and terminated by single heads ; leaves linear- 
oblong, rather obtuse, entire, the cauline sessile, the radical clustered, 
oblanceolate or spatulate-oblong ; rays white or rose-color, very numerous 
and somewhat in a double series, twice the length of the hirsute-tomentose 
involucre; achenia hairy; exterior pappus squamellate-subulate, very dis- 
tinct." T. G. — Saskatchewan to Southern Wyoming. Var. grandiflorum, 
T. & Gr. Taller, 8-10' high; leaves linear-spatulate, the radical ones often 
3-5' long, 2-4" wide; heads, when expanded, an inch broad. — British 
America, in the plains of the Rocky Mountains and the Saskatchewan ; 
Colorado, (244 Hall & Harbour ;) Mount Davidson and Cedar Hill, Nevada, 
(Bloomer.) West Humboldt and Pah-Ute Mountains, on the foot-hills ; 
5-6,000 feet elevation ; June. (548.) Another form, like Hall and Har- 
bour's plant, but with silvery-canescent foliage, was collected in Ruby Valley 
and near Robert's Station, Nevada; 6,000 feet elevation ; July. (549.) 
Another plant, possibly a dwarf form of this species, but at best of 
most uncertain diagnosis, was collected on Star Peak, at 9,000 feet altitude ; 
September. It is the same as Brewer's 2043, referred by Dr. Gray, but 
very doubtfully, to E. nanu?n, Nutt. (550.) 
• Gutierrezia^ Euthami^, T. & G. Stems 6-15' high, numerous from a 
woody and much-branched base, striated ; leaves crowded, narrowly 
linear, 1-2' long, J-1" wide, 1-nerved, minutely scabrous, punctate, resinous, 
and sometimes varnished; heads in little clusters forming compound corymbs; 
involucres scarcely 2" long and 1" broad, narrowly obovate ; flowers of the 
' GUTIERREZIA, Lagasca. Heads small or middle-sized, Ti UO-flowered, the rays pistillate, fertile, 
the disk-flowers tubular, perfect and fertile. Involucre varviii^r from narrowly obconic to broadly hemi- 
spherical, the scales closely imbricated in several series, rigid, and with greenish herbaceous tips. 
Receptacle naked. Corollas yellow, of the rjiy o\ al, olilong or linear, of the disk funnel-shaped, 5-toothed, 
the teeth erect or recurved. Branches of the style in the ray-flower, linear, smooth, tlie stigmatic lines 
extending to the top; in the disk, with the hairy appendages shorter or sever;il times longer than the 
stigmatic portion. Achenia oblong or obconie, terete or somewhat compressed. Pappus of the disk com- 
posed of several oblong or linear chaffy scales, or reduced to a lacerate coroniform border, of the ray 
similar to that of the disk, but commonly smaller or sometimes obsolete. — Mostly perennial an<l suftVnticose 
plants of North and South America, with glabrous and often resinons-dotted or vin nislied liiienr and 
entire or broader and denticulate leaves. 
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