SOME ERIGERON SEGREGATES, 203 



acute, sessile, all foliage deep-green, entire, pubescent margi- 

 nally and more or less so along the veins, but stems quite 

 strigulose; heads not of the largest, but solitary; bracts of 

 involucre very many, linear, acuminate, their slender tips re- 

 curved, all green as to color, not darkened, neither granular 

 nor viscid but rather strongly scaberulous ; rays purplish, 

 decidedly broad, but less so than in E, callianthcmus. 



Known only as collected near the international boundary, in 

 the Chilliwack Valley, in July, 1901, by J. M. Macoun, the 

 type specimens in my own herbarium, bearing the Canad. 

 Surv. numbers 24,468 and 26,467. 



Erigeron ciliolatus. 



branched 



caudex stout, copiously leafy, the leaves ascending or upright, 

 the few flowering stems — one only to each branch of the 

 caudex — only 2 to 4 inches high, stoutish, decumbent, beset 

 with reduced and bract-like foliage, strictly monocephalous, 

 all foliage glabrous except marginally, of the blue-green of 

 E, callianthemtis . not altered bv the process of drying ; basal 



leaves 1 to 1^ inches long, spatulate oblong and very obtuse, 



to lance-oblong and acutish, peculiarly ciliate for this alliance, 

 with a considerable length and density of hirsutulous hairs : 

 bracts of the involucre devoid of pubescence and glandular, 

 dark-colored, almost uniserial and equal, the tips little spread- 

 ing ; rays broad, about 35, nearly or quite white. 



From 7,500 feet on Mt. Rainier, collected 14 Aug., 1895, 

 by O. D. Allen (n. 142), and distributed for E. salsuginostis . 



Erigeron Suksdorfii. Rhizomatous subterranean parts 

 strongly developed and very stout ; stem and tuft of basal 

 leaves solitary at each branch of the caudex and the scapiform 

 stem monocephalous ; herbage firm, glaucous, not in the least 

 discolored in drying: basal leaves upright, ^ to 2' 

 long, the earliest spatulate-oblong, very obtuse, others lanceo- 

 late, acute, all entire, shortly and stiffly ciliolate, the hairs 

 incurved; pubescence of stem strigulose, the hairs appressed : 

 heads as large as in smallish states of E, calUanlhemus, the 



