15 
or 3-toothed, shorter than the flowering glumes, the latter 3-toothed, 
with the middle tooth awned; the palet 2-nerved and 2-awned. Stamens 
3. Styles 3. 
1, 4. geminiflorus H. B. K. Culms much branched, 6 to 8 inches high, weak and 
decumbent below; leaves linear, plane, 1 to 2 inches long; racemes 2 inches long, 
somewhat secund, lax; spikelets in twos or threes, 1 to 14 lines long without the 
awns; empty glumes less than 1 line long, cuneate, the midrib excurrent in a straight 
awn about 1 line long; floral glumes half longer than the empty ones, lanceolate- 
oblong, 8-nerved, 3-toothed, the middle tooth extended into an awn two or three 
times as long as its glume; palet 2-nerved, 2-toothed.—Huachuca Mountains Arizona 
(Lemmon) and also in Mexico, 
TRAGUS Hall. 
Flowers in rather loose terminal spikes, the spikelets in clusters of 
2 to 5, mostly 3, imperfect. The perfect spikelets 1-flowered, with dis- 
similar glumes, the lower one minute and membranaceous, the upper 
ones concave, subcartilaginous, and beset with stout, short hooks ; the 
flowering glume firmly membranaceous and acute ; the palet shorter 
and thinner, 2-nerved. Stamens 3. Styles distinct. 
1. T. racemosus Hall. (Vasey, Grasses of the Southwest, Pl, 14.) Culms much 
branched at base, slender, 6 to 18 inches high, leafy, decumbent below; leaves 1 to 
2 inches long, ciliate, serrate on the margins ; sheaths loose and striate, shorter 
than the internodes; spike 2 to 4 inches long, narrow, densely flowered, the spike- 
lets about 1 line long.—Introduced and abundantly naturalized near the Gulf of 
Mexico. 
REIMARIA Filiigge. 
Spikelets acuminate, in unilateral subsessile spikes, with one perfect 
terminal flower and one exterior empty glume, membranaceous, 3- 
to 5-nerved, acute, about equaling the fertile glume; fertile glume 
and palet indurated or membranaceous, finely punctulate. Stamens 2. 
Styles 2, distinct to the base. Stigmas long and plumose. Culms as- 
cending, diffusely branched at base. 
1. R. oligostachya Munro. (Chapm. Fl. S. States, Suppl. p. 665.) Culms 1 to 
2 feet high, procumbent and rooting at the lower joints, smooth, leafy; sheaths 
about equaling the internodes; leaves plane or becoming couvolute, narrowly linear, 
acuminate; upper sheaths usually inclosing the base of the 2 to 3 approximate, 
erect or divergent spikes about 2 inches long and 10- to 20-flowered.—Florida, in 
ditches and shallow water; probably also to be found on the Gulf coast westward. 
This species varies from the character of the genus in usually having a second 
outer glume either fully or imperfectly developed in a portion of the spikelets of each 
spike. 
R. acuta occurs in Cuba, and will probably also be found in southern Florida. 
PASPALUM Linn. 
Spikelets obtuse or rarely short-acuminate, each with one terminal 
perfect flower, in one or two rows along one side of the slender solitary 
or paniculate flattened spikes. Glumes 3, the outer ones membranace- 
ous, equal, or ina few species the outer one smaller or disappearing; the 
flowering glume more or less concave, becoming indurated, embracing 
