122 LEAFIvETS. 



rado, one fine species from Colorado collected by myself in 

 1896 was yet unpublished. I place this first in the line of new 



species herein described. 



In its vastness Agoseris almost seems to replace in this 

 country Hier actum of the Old World. I think that something 

 like seventy species have already been published ; and I should 

 not wonder the number existing on the plains and slopes and 

 summits of the West yet undiscovered should amount to seventy 

 more. It would be no more remarkable than that there should 

 be two or three hundred species of Hieracium on an equal 



extent 



Hieracium is a verv conservative 



Agoseris longissima. Plants 2 feet high and more, glau- 

 cous, mainly glabrous ; leaves erect, more than a foot long, 

 narrowly linear, entire, acute, loosely curled-hairy marginally 

 near the base, the plant otherwise wholly glabrous : heads 

 small for the plant, the involucres rather many-flowered, but 

 less than an inch high, the bracts all triangular-lanceolate, 

 acute, the outermost shorter and a little broader than the 

 others, without trace of pubescence : achenes about 5 lines 

 long, very slender, tapering to a striated and hollow beak, this 

 in those of the dark-colored outer series of less than one-third 

 the length of the body, in the whitish median ones of nearly 

 half the length of the body : pappus white, very delicate and 

 fragile. 



Collected only by myself, on the lyittle Cimarron River, 

 29 August, 1896, the specimens all in my own herbarium. 

 Remarkable for the great height of leaves and scapes, and the 

 small heads, but these on decidedly stoutish and firm scapes. 



Agoseris vicinalis. Plants a foot high more or less, with 

 glabrous glaucous herbage and more or less depressed or 

 merely ascending leaves, these lance-linear, entire, acutish, 

 of less than half the length of the somewhat slender scapes, 

 these usually decumbent at the very base, thence ascending or 

 else quite erect : involucres rather many-flowered and broad, 



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