312 COMPOSITE KUCEPflALtJS 



OREA.STBUM 



aasd almost woolly herbaceous and taper pointed ta* margins serrulate- 

 scabrous, not woolly or ciliate. Mt. Adams, Washington* Suksdorf No. 

 ISM." 



E. ledophyllus Greene 1. c. Aster Engelmannii var. ledophyllus Gray, 

 Stems 1-2 feet high, rather strict : leaves lanceolate, mucronate-apiculate. 

 entire or lower, with a few apiculate teeth toward the apex 1-2 inches 

 long, cottony tomentulose beneath, at least when young, the lower often 

 obtuse: heads solitary, or few in a simple paniculate cyme: bracts of the 

 involucre lanceolate to linear, very acute or acuminate, the outer succes- 

 sively shorter but similar; rays purple, 10--12 lines long: achenes hirsute 

 at the summit. On the highest parts of the Cascade mountains. 



E. tomentellus Greene 1. c. Sericocarpus tomentellus Greene Pitt, i, 2$3. 

 Strict, erect 2-3 feet high, paniculately branched above, leaves ovate- 

 lanceolate, acute or acutish barely apiculate, entire, 1-2 inches long, to- 

 mentulose beneath, smooth above: heads small and narrow: involucral 

 bracts, strict with loose tomentose tips, in several ranks, the outer succes- 

 sively shorter and passing into ordinary leaves : rays usually wanting 

 rarely 1 or 2 : achenes minutely appressed-hirsute. On dry ridges eastern 

 base of the Coast mountains near Waldo, Oregon. 



E. glaforatus Greene, Pitt, iii, 56. Stems strict, 1-2 feet high : glab- 

 rate throughout: leaves ovate-lanceolate to lanceolate, acute 8-18 lines long, 

 entire, conspicuously reticulate veiny : heads rather few, small and nar- 

 row: bracts of the involucre linear, abruptly acute, in several ranks, the 

 outer successively shorter and more lanceolate : rays none : achenes hirsu- 

 tulous. On dry ridges of the Siskiyou mountains. 



E. glaucescens Greene 1. c, Aster Engelmanni var. glancescens Gray 

 Herbage, pale green and smooth throughout : stems mostly slender, 1-3 

 feet high: leaves somewhat glaucous, lanceolate, often acuminate, 2-3 

 inches long, 2-7 lin-s broad, entire: heads large, one to several in an open 

 terminal cyme : bracts of the involucre lanceolate, often acuminate in few 

 ranks, the outer successively shorter: rays 15-20, 8-12 lines long: achenes 

 appressed-pubescent. On Mt. Adams, "Washington and vicinity. 



E. paucicapitatus "Greene 1. c. Aster paucicapitatus Robinson. Sim- 

 ple, monacephalous : stems decumbent at base, 6-18 inches high : herbage 

 glandular-puberulent even somewhat scabrously so, only the margins of 

 the oblong-lanceolate obtuse thinnish leaves minutely woolly-ciliate : bracts 

 of the broad involucre not very unequal or much imbricated, lanceolate 

 and herbaceous though with a distinct carinate mid-vein : rays few, their 

 color doubtful: pappus rather opioua and fine, the bristle in no degree di- 

 lated upwards: achenes sparsely appressed-pubescent. Olympic moun- 

 tains, Washington. Piper." 



E. Covillei Greene Pitt, iii, 162. "Tufted stems more than a foot high, 

 somewhat flexuous, racemous-corymbose from near the middle, these and 

 the lower face of the leaves sparingly tomentulose : leaves oblong-lance- 

 late, acute, entire : bracts of the narrowly campanulate involucre granular- 

 puberulent, well imbricated, herbaceoas and scarcely carinate, lanceolate 

 and oblong-lanceolate: rays few (5-7), long and narrow, deep violet. Near 

 Crater Lake, Oregon. Coville." 



19 OREASTRUM Greene Pitt, iii, 146. 



Acaulescent perennials with narrow sub-coriaceous entire 

 leaves and scapiform monacephalous branches from a stout some- 

 what fusiform and not freely branching taproot. Bracts of the 

 involucre narrow, sub-equal in about 2 series. Rays rather nu- 

 merous, elongated, purple. Disk carollas tubular-funnel form, 



