A FURTHBR STUDY OF AGOSERIS. 123 



less than ^ inch high ; bracts remarkably consimilar, all being 

 narrowly lanceolate, the outer series not much shorter than 

 the inmost, the number of series rather definitely two: achenes 

 about 5 lines long including the stout beak which is not much 

 shorter than the body; pappus soft, white, of nearly the same 

 length as the achene. 



Ivow prairies at Brookings, South Dakota, June, 1891, T. H. 

 Williams ; type in U. S. Herb. The locality is interestingly 

 near to that whence the original of Troximon glaucum, Nuttall, 

 came, which was Fort Mandan. Nuttall's plant, however, 

 was said to have a much imbricated involucre of pubescent 

 scales. 



Agoseris isomeris. Stout and low, glabrous throughout, 

 glaucescent rather than glaucous, the scapes stout, strongly 

 striate, 4 to 6 inches high and nearly twice the length of the 

 depressed or ascending rather ample foliage : leaves oblong or 

 lance-oblong, entire or the margins somewhat full and crisped, 

 at apex merely acutish, the base narrower and petiolar : invol- 

 ucres yi inch high, rather many-flowered, the bracts in rather 

 more than two series but of almost precisely equal length, the 

 outer oblong or lance-oblong, the inner lanceolate, these acute, 

 but hardly so the outermost : flowers apparently yellow: fruit 

 not known, but doubtless beakless. 



Fish Lake, Uintah Mountains, Utah, 18 July, 1902, I^eslie 

 N. Goodding. This plant, so well marked in habit, and with 

 such a peculiar involucre, must be almost or quite alpine, the 

 altitude of Fish Lake being nearly 9000 feet. 



Agoseris taraxacoides. Subalpine, with the habit of 

 the last, but taller, the scapes 4 to 8 inches high, the leaves 

 less than half as long, these deep-green but glaucous, variously 

 toothed and pinnatifid, some closely and coarsely dentate, 

 others more truly pinnatifid , but the lobes or segments divari- 

 cate, their margins at the base arachnoid- woolly, otherwise 

 quite glabrous: scapes somewhat woolly, under the involucres; 

 these 1 inch high or less, the outer bracts lanceolate, their 



