37 
FIG. 333. P. AL GIGANTEUM Baldw. in Vasey, Bul. Torr. Bot. Club, 
1 TER-GRASS.—A stout, erect, coarse perennial 8-18 
dm. (219-6?) high, wi , flat leaves an 5 racemes 15-25 em. (6/-10^) 
long. Sheaths loose, striate, exceeding the internodes, the lower ones pilose; 
leaf-blades m. (12/-24’) long, 2-3 em. (4-1) wide, smooth ly 
P nt. Spikelets (b, c) about 3 mm. (14) long, crowded, obtuse, arrang 
in two rows as e portion of the axis and pedicels at a; 
two ro 
empty glumes smooth, 3-nerved. The flowering glume is shown by d, and the 
palea by ¢.—Moist ground and ditches, Florida. June to August. 
