No. 25. 
TRICHLORIS VERTICILLATA Fourn. (Chloropsis Blanchardiana 
Gay in Herb.) 
Plant perennial, mostly glaucous, or light-green, or purplish in the infloresceurce. 
Culms tufted from somewhat bulbous base, erect or sometimes prostrate below 
and rooting at the lower nodes, terete, solid, smooth, 1 to 24 feet tall. 
eaves ; radical and from sterile culms, with compressed. hairy-fringed sheaths _ 
and hispid, flat or somewhat revolute, slender-pointed blades 3 to 8 inches long; of 
stem usually 4; lower sheaths equaling nodes, upper ones often much shorter, 
striate, hispid, hairy along the margins, blade flat or V-shaped with revolute mar- 
gins, hispid above and below and with scattered white hairs above the ligule, which 
is a dense row of fine white hairs } line long. 
Inflorescence an umbellate cluster of 8 to 12 or more narrow, sessile, slightly 
spreading spikes, 3 to 4 inches long, with the spikelets narrowly-sessile in two 
rows on one side of the hispid rachis. 
Spikelets lance-linear, with one fertile and one sterile flower; first glume linear- 
lanceolate, acute or short awned, hyaline, l-nerved, } to $ line long; second glume 
ovate, ? line long, with an awn of equal length; third or floral glume narrowly 
lanceolate, scabrous on back, obscurely 3-nerved, 1} lines long, terminating in 3 
scabrous awns 5 to 9 lines long; palet lance-linear, ciliate at the rounded apex, 
hyaline, 2-nerved, 1} lines long; fourth (sterile) glume, cylindrical, filiform, 1 line 
long, terminating in 3 hispid awns 3 to 6 lines long. 
rain lance-elliptic, triangular in cross section, translucent, light yellow, with 
light orange chit, falling with the spikelet, entire except the persistent empty 
- glumes. 
PLATE XXV; a, and b, spikelets enlarged. 
Texas, Arizona to Mexico. 
