No. 4. 
PASPALUM LIVIDUM Trin. 
Plant perennial, coarse, somewhat tufted on a short rootstock. 
Culms few in a place, erect, or decumbent, geniculate below, solid, terete, 2 to 
3 feet tall. 
Leaves; radical mostly scarious; of culin 6 to 9; she 
internode, loose, often compresged and open, lower ones often pubescent: blades 
flat, hispid above and below toward the tip, 3 lines wide, 2 to 6 inches long; ligule 
a tawny, lacerate, membranaceous fringe, { line long, decurrent. 
Infloresesnce a racemose panicle of 4 to 8 approximate spikes, alternate on the 
flattened axis, 2 to 4 inches long; spikes unilateral, sessile, 1 to 14 inches long; 
rachis flat and smooth, $ line wide, usually purplish. 
Spikelets crowded, usually in 4 rows 
flattish, 1-flowered, 1 to lf lines long; 
aths equaling or exceeding 
. Sessile or on short pedicels, oblanceolate, 
first glume broadly ovate, acute, sightly 
convex, slightly roughened on back. 5-nerved, lateral nerves marginal and joining 
midnerve at apex, 1 line long; second glume same but flat and slightly smaller; 
floral glume, indurated, round on back, with inrolled margins, very obscurely 
d-nerved, ¢ line long: palet broadly oval, indurated, nearly flat. with irregular, 
hyaline margins below enfolding the seed, obscurely 2-nerved, nearly 1 line long. 
Grain; a careful search through 18 specimens pr 
and that immature, but old enough to show the for 
on both sides } line long, 
oduced but one perfect grain 
m, obovate, rounded, flattened 
PuaTE IV; «a, first empty glume; 6, second empty glume; c, floral glume, 
stamens, and pistil; @, palet, ventral view, with two membranaceous lobes turned out. 
Found in southwestern Texas ; common in Mexico, 
