VOL. XVIII, PP. 1 1-18 JANUARY 20, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DIAGNOSES ARAGALLORUM. 

 BY EDWARD L. GREENE. 



Responding to a request lately made that I would name some 

 newly gathered specimens of Aragallus from New Mexico, I 

 found it needful to examine with eare a copious supply of old 

 material resting chiefly in the National Herbarium, from vari 

 ous parts of the Southwest all the way from the Rio Colorado 

 to the Rio Grande; material that had been accumulating from 

 the days of Lindheimer and Charles Wright more than a half- 

 century ago, down to our own time; most of it labelled Oxi/tropis 

 Lamberti. 



When, some seven years since, I was demonstrating the neces 

 sity of adopting the generic name Aragallus, I came also to a 

 realization of the fact that the species of the genus in North 

 America were more numerous than had ever yet been indicated, 

 and in the mean time, besides several proposed as new by my 

 self,* Mr. Nelson, of Wyoming, t and Mr. Rydberg, of New 

 York,t have added quite a number, theirs mostly from the 

 northern Rocky Mountain region within the United States. 



In the course of my own newly resumed study of the genus, 

 I found that in the Texano-Neo-Mexican region there was much 

 more waiting to be done than I had anticipated; and I begin 

 this series of diagnoses with the essential characters of some 

 species belonging to this well defined geographic and climatic 

 region. 



* Pittonia, iii, 212, and iv, 69. 

 fErythea, vii, 57-64. 

 | Fl. Montana, 250-255. 



3 PROC. BIOL. Soc. WASH., VOL. XVIII, 1905. (11) 



