92 



Fig. 86. ARISTIDA PAX,USTRIS (Chapm. j Vasey, Desc. Cat. Gr. U. S. 35. 1885. 

 {A.rirgatajialustrisChapm.Fl.SoX.S.bbb. 1860.) SWAMP POVERTY-GRASS.— 

 An upright, rigid perennial 6-15 dm. (2°-5°) high, with long, narrow leaves and 

 slender, interrupted, spicate panicles 30-70 cm. (12'-30') long. Leaves flat below, 

 becoming involute, 3-6 dm. (l°-2°;) long. Empty glumes (a) subequal, 10-12 

 mm. (5"-6") long, the first 3-nerved, the second 1-nerved; flowering glume (6) 

 about 8 mm. (4") long; lateral awns about 16 mm. (8") long, the divergent mid- 

 dle one 20-25 mm. (10"-12") long. Palea very short.— Moist places near the 

 coast in the pine barrens. South Carolina to Texas. (Cuba.) August to October. 



