164 



Fig. 146. Calamagrostis tweedyi Scribn. ; Beal, Grasses N. 

 Am., 2 : 348. — A stout perennial 7 to 10 dm. high, with rather 

 broad, flat leaves and densely flowered, spike-like panicles 8 to 

 12 cm. long. — Cascade Mountains, Washington. 



