A REVISION OF THE CICHORIACEOUS GENERA KRIGIA, 



CYNTHIA, AND CYMBIA. 



By Paul C. Standley. 



INTRODUCTION. 



The revision embodied in this paper was undertaken as the result 

 of an attempt by the writer to determine a cichoriaceous plant from 

 the mountains of northern New Mexico, which came to hand at the 

 New Mexico Agricultural College. The specimen strongly suggested 

 the Adopogon virginicum of the Central States, but did not seem to 

 agree in all particulars with the published characterizations of Ado- 

 pogon. It was finally decided that it must be a Ilieracium, although 

 very much unlike most members of that genus in general appearance. 

 This view was strengthened by finding the same plant determined, 

 but never published, by Dr. E. L. Greene as a new species of Hieracium. 

 Accordingly, a description was drawn up and a manuscript name given 

 the plant under this genus. Upon submitting the two specimens to 

 Dr. P. A. Kydberg, however, we were informed that the plant really 

 belonged to the genus Adopogon, although it was admitted that cer- 

 tain of its characteristics were deceptive. Both Doctor Greene and 

 myself had thought that the plant had the pappus of Hieracium, over- 

 looking the row of minute outer scales which are scarcely visible under 

 an ordinary hand lens. 



That others have had similar difficulties is shown by the following 

 letter attached to a sheet in the herbarium of the Missouri Botanical 

 Garden. Although written by one evidently inexperienced in botany 

 it shows the difficulties encountered in the usual characterizations of 

 this group of plants. 



To Dr. Wm. Trelease: 



By this eame mail I send you specimens of a member of the Compositae, on which I 

 desire your opinion. I have studied it very carefully, as best I could, and can place it 

 nowhere unless it be Crepis glauca T. & G. But this in even the latest monograph is 

 placed only in localities of 3,000 to 6,000 feet elevation in Utah and Oregon. 



Upon examination of the National Herbarium material in the Ado- 

 pogon covers and after consulting the literature of that genus it has 

 been found that the arrangement of this group of the Cichoriaceae 



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