192 



Fig. 488. Calamagrostis porteri A. Gray. ?roe. Am. Acad. 6: 

 79. 1862. Porter's Eeed Bent. — A slender, erect, glabrous per- 

 ennial 6 to 12 dm. high, with rough, fiat leaves and narrow, 

 rather loosely £ owered panicles 8 to 16 cm. long. Spikelets 2 to 

 5 mm. long, with nearly equal glumes, the scabrous outer oues (a) 

 very acute; the flowering glume obtuse, scabrous, with the basal 

 hairs one-fourth to one-third its length. — Dry woodlands, Xew 

 York and Pennsvlvania. August. 



