486 PHANEROGAMOUS PLANTS. 



3. Agrostis exarata, Trin. 



Agrostis exarata, Trin. Gram. Uni.-Sesquifl. p. 207, & Icon. t. 27. 



A. asperifolia, Trin. Agrostid. 2, p. 71. 



A. pollens, Trin. 1. c. p. 82. 



A. Schiedeana, Trin. 1. c. p. 81. 



A. microphylla, Torr. Bot. Whippl. Rep. p. 154. 



Hab. Numerous localities in California and northward. — That this 

 is a very variable species is shown by the synonyms given above, 

 those relating to Trinius's species being upon the authority of General 

 Munro. It occurs, according to locality, from 2 inches to 4 feet in 

 height, and, as is the case with other species of Agrostis on the north- 

 west coast, varies as to the presence or absence of an awn to the lower 

 palet, and the size of the upper one. 



17. CALAMAGROSTIS, Adam. 



1. Calamagrostis Canadensis, Beauv. 

 Hab. Spokane River, Washington Territory. 



2. Calamagrostis Aleutica, Trin. 



Calamagrostis Aleutica, Trin. in Bong. Veg. Sitcha, p. 71 ; Gray in Proc. Am. 

 Acad. 6, p. 80. 



Hab. Gray's Harbor, Washington Territory. — Since collected by 

 Bolander and others near San Francisco and elsewhere. According 

 to Bolander it forms large tufts upon which cattle will feed in times 

 of scarcity. 



18. P H R A G M I T E S, Trin. 

 1. Phragmites communis, Trin. 

 Hab. Sacramento, California, and Puget's Sound. 



