56 PITTONIA. 
6. E. GLABRATUS. Aster brickellioides, var. glabratus, - 
Greene, Pitt. ii. 17 (1889). 
The character of this need not here be reproduced. It is 
a clear species, of dry pine woods near the summit of the - 
Siskiyou Mountains in extreme northern California and — 
adjacent Oregon. 
7. E. enAUcESCENS. Aster Engelmannii, var. glaucescens, i 
Gray, Syn. Fl. 200, in large part. Near E. serrulatus, but | 
pale and glaucescent throughout, the leaf-margins only re- 
motely and interruptedly serrate-toothed: terminal corymb | 
ample, and heads large, radiate: bracts of the involucre nar- | 
row, but not herbaceous, firm and often obscurely triple- i 
nerved, with a narrow and thin scarious margin: achenes 3 
pubescent. 
My type for this is Mr. Suksdorf's n. 118 of my own herba- | 
rium; the specimens obtained on Mt. Paddo (Adams), Wash- 
ington. The species is doubtless subalpine. 
8. E. eraucus, Nutt., Trans. Am. Phil. Soc. vii. 299 (1840). 
Aster glaucus, Torr. & Gray, FI. ii. 159 (1841).—Very common - 
in the middle Rocky Mountain region, in dry clayey soil at — 
middle altitudes, from Colorado and Utah northward well | 
towards the British boundary. 
9. E. PAUCICAPITATUS. Aster paucicapitatus, Rob., Proc. ; 
Am. Acad. xxix. 329 (1894).—Simple monocephalous stems ; 
decumbent at base, 6 to 18 inches high; herbage glandular- | 
puberulent, even somewhat scabrously so, only the margins 
of the oblong-lanceolate obtuse thinnish leaves minutely . 
woolly-ciliolate: bracts of the broad involucre not very _ 
unequal or much imbricated, lanceolate and herbaceous, - 
though with a distinet carinate midvein: rays few, their | 
color doubtful: pappus rather copious and fine, the bristles 
in no degree dilated upwards: achenes sparsely appressed- 
pubescent. 
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S 
M TUR 
