80 ERYTHKA. 



Prantl, as everyone is aware, is impossible. May Doctors Torre 

 and Harms prosper in their undertaking. 



Bulletin No. 40 of the Wyoming Experiment -Station, "The 

 Trees of Wyoming and How to Know Them," by Prof. Aven Nel- 

 son, should be useful. It is very fully illustrated, and by means of 

 it the novice may learn the names of the native trees and the more 

 important facts concerning them. The Bulletin also has for its 

 object the development of a popular interest in the forests and in 

 the forest-reservations of the state, of which there are three, exclu- 

 sive of the Yellowstone Park. Concerning the willows, we note the 

 statement that "])erliaps no other state in the United States possesses 

 so many different kinds of willows as AVyoming." For AVyoming, 

 it is said, Mr. Bebb suggested "Willow State" as a suitable nkme. 



Part 20, of Pittonia, issued by signatures from January to 

 April, 1899, contains several papers relating, in whole or in part, to 

 Western America : " New species of Castilleia ; " " New AVestern 

 Species of Rosa;" "New Choripetalous Exogens;" "Notes on 

 Mach?eranthera," and descriptions of various new species. The 

 perennial creeping Lippias, with sessile forked hairs, are separated 

 from that genus by Prof. Greene and renamed under Loureiro's 

 name of Phyla. 



Mr. J. B. Davy, Assistant Botanist to the University of Cali- 

 fornia Agricultural Experiment Station, has been engaged during 

 the months of June and July in field- studies and in making collec- 

 tions of the grasses and economic plants of the north Coast -Ranges 

 from Ukiah to Crescent City. He was accompanied in his botani- 

 cal wanderings by Mr. W. C. Blasdale, who made, for the most 

 part, collections of fungi. 



