CATALOGUE. I53 



E.filifolium 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 Aster. (547.) 



Ekigeeon CiESPiTOSUM, Nutt, "Dwarf, canescent with a close and 

 short pubescence ; stems numerous from a thickened caudex, cEespitose, 

 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. geandifloeum, 

 T, & G-. 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. nanum, Nutt. (550.) 



Gutieeeezia'^ Euthami^, T. & G. Stems 6-15' high, numerous from a 

 woody and much-branched base, striated; leaves crowded, narrowly 

 linear, 1-2' long, i-1" wide, 1-nerved, minutely scabrous, punctate, resinous, 

 and sometimes varnished; heads in little clusters forming compound corymbs; 

 involucres scarceily 2" long and 1" broad, narrowly obovate ; flowers of the 



' GUTIEEEEZIA, Lagasca. Heads small or middle-sized, 6-90-flowered, the rays pistillate, fertile, 

 the disk-flowers tubular, perfect and fertile. Involucre varying from narrowly obconic to broadly hemi- 

 spherical, the scales closely imbricated in several series, rigid, and with greenish herbaceous tips. 

 Eeceptacle naked. Corollas yellow, of the ray oval, oblong or linear, of the disk funnel-shaped, 5-toothed, 

 the teeth erect or recurved. Branches of the style in the ray-flower, linear, smooth, the stigmatic lines 

 extending to the top ; in the disk, with the hairy appendages shorter or several times longer than the 

 stigmatic portion. Achenia oblong or oljconio, 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 and suffruticose 

 plants of North and South America, with glabrous and often resinous-dotted or varnished linear and 

 entire or broader and denticulate leaves. 

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