404 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
24. Bouteloua texana S. Wats. 
Bouteloua (Polyodon) terana 8, Wats. Proc. Amer, Acad. 18: 196. 1883. The first 
specimen cited, Berlandier 1535, which I accept as the type, I have been unable to 
find in the Gray Herbarium. Duplicates of Hail 771 and Wright 752, which are cited 
by Watson, are in the 
\ National Herbarium. 
' See also U.S. Dept. Agr. 
Div. Agrost. Bull. 7: 215. 
f. 197, 1898. 
y Polyodon teranus Nash 
f in Small, I'l. Southeast. 
f U.S. 138. 1903. 
DESCRIPTION, 
An erect, cespitose per- 
ennial, 20 to 30 cm. high, 
usually growing in scat- 
tering bunches among 
other grasses, seldom oc- 
cupying areas exclu- 
sively; culms simple, 
erect; sheathsrather close, 
smooth, striate, with a 
small ligule bearing a few 
scattered hairs ora ciliate 
fringe; blades narrow, in- 
volute, about 10 cm, long, 
sparingly pubescent with 
long, papillose hairs on the 
edges and especially on 
the upper surface, the 
hairs less conspicuous 
below; inflorescence race- 
mose, 4 to 5 cm. long; 
spikes 6 to 8, about 1 em. 
long, on short, pubescent 
peduncles 1 mm. long, eas- 
ily separable and drop- 
ping off entire; spikelets 
not pectinate, crowded, 
consisting of a lowerfertile 
floret and 2 upper rudi- 
ments, or often the entire 
Fig. 53.—Bouteloua terana. a, Spikelet; b,c, lemma and palet of spikelet rudimentary; 
first floret; d, e, rudimentary lemma and palet of second floret; 
qt; rudimentary third floret; g, two views and cross section of late,acuminate. hairy, the 
caryopsis. a, Scale 7.5; b-g, scale 10. From Griffiths 6370. , ? Died 
first 3 to 4 mm., the sec- 
ond about 6 mm. long, short-awned; lemma about 6 mm. long over all, sparingly 
hairy on the nerves, bearing 3 equal, hispid awns; palet 4 to 5 mm. long; ovate, 
acuminate or with 2 very short awns; lower rudiment of 3 equal, hispid awns 
about 7 mm. long, united at their bases by rudimentary glumes, and having a 
rudimentary, cleft palet 2 to 3 mm. long, the upper rudiment of the same nature but 
smaller in all its parts and usually with no palet; caryopsis about 2 mm. long, 0.6 
mm. wide, flat on the dorsal surface, the scutellum covering about seven-eighths 
of the entire ventral surface. (PLATE 80, B, facing p. 402. Ficure 53.) 
glumes unequal, lanceo- 
