192 
Fig. 488. CALAMAGROSTIS PORTERI A. Gray, Proc. Am. Acs ^s pee 
1862. PORTER’S REED magenta slender, erect, gl nnllo. pani 
(2249) high, with rough, flat leaves and narr ow, rather loosely rr 
cles 8-16 em. (3’-6’) long. Sheaths shorter bán the intern: es n w) 
strongly bearded at the Summit, otherwise smooth; lent De t 5 
ni 
interrupted, erect. Spikelets 4-6 mm. (2"-3") long; empty glumes or 
y scabrous, the first slightly longer than the emp 
flowering glume (b) 4-5 mm. (2.2%) long, t equaling the second at the 
, Nar’ , minutely denticulate or sharply 4-dentate stout, 
apex; awn attached about one-fifth above the base, 3-4 mm. (1-2 long, 
minutely scabrous, bent above the middle, twisted below the ge 
basal h one-third i Po 
of the rachilla (c ) about 1 mm, (4^) long, with its hairs about one-fifth M 
than the palea.— Woodlands, New York and Pennsylvania. July, 
