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Fig. 488. Calamagrostis porteri A. Gray, Proc. Am. Acad. 6 : 

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

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

 rather loosely fiowered 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, New 

 York and Pennsylvania. August. 





