SOME ERIGERON SEGREGATES. 217 



oblanceolate acute blades 3 or 4 inches long, the cauline all 

 sessile, but the lower spatulate-lanceolate, the others oblong 

 to ovate-lanceolate, IJ^ to 2/^ inches long and sessile by a 

 broad half-clasping base : heads much smaller than in others 

 of the macranthi, 1 to 3 on naked rigid peduncles, the recep- 

 tacles under the bracts strongly muricate-scabrous, the bracts 

 rigid, subulate-linear, their slender tips recurved, strongly 

 scaberulous ; rays not elongated nor so very numerous, but 

 rather broad, of a deep violet-color : achenes strigulose, pap- 

 pus fine and fragile. 



South shore of Pettit Lake, Idaho, collected 14 Aug., 1895, 

 by Dr. B. W. Kvermann of the U. S. Fish Commission, who 

 describes the habitat as a morainic ridge, at an altitude of 

 7200 feet or more. The species is strongly marked, and has 

 something of the aspect of Bucephalus glaucus. 



Erigeron apicui<atus. Plant 2 feet high or less, in habit 

 between the macranthi and the glabelli, having a strongly de- 

 veloped tuft of basal petiolate leaves, the stem being copiously 

 and equably leafy with broad sessile ones, all the foliage thin- 

 nish, wholly glabrous except marginally, and even there 

 faintly if at all ciliate ; basal leaves upright, 3 to 6 inches 

 long including the broadly lanceolate and lightly serrate blade 

 and the broad petiole, the cauline about iV^ inches long, 

 ovate-lanceolate or narrower, entire, but all leaves both basal 

 and upper tipped abruptly with a long almost aristiform mu- 

 cro : heads about 4, corymbose, long-peduncled, among the 

 largest ; involucres nearly hemispherical, in the pressed speci- 

 mens 1 inch across, the bracts linear, equal, in about 3 series 

 and, like the peduncles below them, finely and closely glandu- 

 lar-scaberulous, the outside of the receptacle beneath the 

 bracts hirsutulous with short deflexed hairs ; rays many, long, 

 the spread of them about 1% inches, broader than those of 

 other macranthi. 



