178 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
of the primary spikelet adnate to the midnerve of the rachis; first 
glume minute, often hyaline; second glume shorter than the spikelet; 
sterile lemma subindurate, thinner down the middle, at maturity 
splitting to the base (the margins of the split rolling inward), or 
deeply sulcate only, the sterile palea 
nearly as long as its lemma, the 
Ni margins firm, enclosing a stami- 
: nate flower cr empty ; fruit cartilagi- 
nous-indurate, commonly with stiff 
hairs at the summit. Slender 
branching perennials, with narrow 
blades. 
Rachis ciliate with stiff hairs; blades pi- 
lose, at least on the margin. 
. T. PASPALOIDES. 
Rachis not ciliate; blades glabrous or 
Nearkvisos sae 2. ie ROBUSTAL 
1. Thrasya paspaloides H. B. K.., 
Nov. Gen. et Sp. 1: 121. pl. 
39. 1815. Venezuela. 
Panicum thrasya Trin., Mém. 
Acad. St. Pétersb. VI. Sci. Nat. 1: 
228. 1834. Based on Thrasya 
paspaloides H. B. K. 
Thrasya trimtensis Mez, Repert. 
Sp. Nov. Fedde 15: 125. 1918. 
Trinidad, Broadway 5294. 
Perennial; culms erect, slender, 
densely tufted, 25 to 50 cm tall, 
i eS 
1} A 
WU NA 
il Mi ¥h 
A 
FIGURE 113.—Stenotaphrum secundatum. Plant, X 14; two views of spikelet, and fertile floret, X 10 
(Tracy 1408). 
at length branching from the upper nodes; blades flat, narrow, pilose 
at least on the margin; racemes arcuate, long-exserted, 3 to 5 cm long, 
the rachis ciliate with stiff hairs; spikelets stiffly ciliate, about 3 mm 
long (fig. 114). 
