A FURTHER STUDY OF AGOSERIS. 121 



MORUS GRISEA. Sterile branch stout, straight, at intervals 

 of 2 inches parted into rigid ascending leafy twigs, the bark 

 of both branch and twigs copiously short-tomentose : leaves 

 of broadly cordate-ovate outline, 1% inches long, of the same 

 breadth just above the base, but deeply and regularly as well 

 as quite constantly 3-lobed, the lobes subequal, or now and 

 then the terminal lobe smaller than the two basal, this one 

 always cuspidate-acuminate, the whole leaf margin rather 

 coarsely serrate- toothed, the texture uncommonly firm, almost 

 subcoriaceous, both faces colored much alike and subcinereous, 

 the upper extremely rough with a dense investiture of hair- 

 tipped pustular elevations, the lower densely hirsutulous along 

 the veins and sparsely tomentulose between them, the whole 

 lower face as soft to the touch as the upper is harsh and rasp- 

 like : fruit unknown. 



The fine specimen of this is on U. S. Herb, sheet 41506, 

 and purports to have been collected forty years ago, by Dr. 

 Edw. Palmer, at ** Hell Canon, Arizona"; I presume in the 

 northwestern part of the State, in some arm or tributary of 

 the Grand Canon. 



A Further Study of Agoseris. 



It is now twenty years since the name Agoseris was restored 

 by me to its place as the rightful name for a large cichoriaceous 

 genus of western North America. In the paper wherein this 

 proposition was announced (Pittonia, II., 176-179) some 

 twenty-three species were indicated. In the course of the two 

 decades that have intervened, I have discovered and published 

 a few others from various parts of the farther West. In the 

 year 1906 Mr. Rydberg was able to list for Colorado alone 

 twenty-two species, eight of these having been added to the 

 Colorado flora by himself, and two of them by Mr. Geo. E. 

 Osterhout, an excellent botanist resident in Colorado. Yet at 

 the time when Mr. Rvdbere was oreparine: the Flora of Colo- 



Lkafi^exs, Vol. II, pp. 121-152. 11 May, 1911. 



