196 



Fig. 492. Calamagrostis macouniaiia Vasey, Contr. Nat. Herb. 

 3 : 81. 1892. (Deyeuxia macouniana Vasey, Coult. Bot. Gaz. 10 : 

 297. 1885.) Macoun's Reed-bent. — A slender, erect, leafy per- 

 ennial 3 to 6 dm. high, with narrow, flat leaves and narrow- or (in 

 anthesis) open, pyramidal panicles 6 to 8 cm. long. Spikelets 

 with nearly equal empty glumes (a) about 3 mm. long, scarcely 

 exceeding the short-awned flowering glume.— Moist sandy soil, 

 Assiniboia to Missouri, Montana, and Washington. May-August. 



