198 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
ing into a point or awn, as long as the lemma or reduced in some of 
the spikelets or wanting, the second glume firm, thick and woody, 
almost surrounding the remainder of the spikelet, rounded on the 
_ back, white or yellowish, obscurely nerved, the margins inflexed, thin, 
ciliate, the upper part greenish, acuminate, spreading, with one or 
two teeth at the sides; lemma firm-membranaceous, 3-nerved, dor- 
sally compressed, broad below, narrowed into a 3-lobed green summit, 
the middle lobe much the larger; palea 2-nerved, broad, obtuse, about 
as long as the body of the lemma, enveloping the caryopsis. 
Fig. 117.—Wunroa squarrosa. Plant, X 4; group of spikelets (reduced spike), spikelet, 
and floret, x 5. j 
A low stoloniferous perennial, with short curly blades, the 
staminate flowers in two or three short spikes on slender, erect culms, 
the pistillate in sessile clusters partly hidden among the leaves. 
Species one, on the Great Plains from Montana to Mexico. 
Type species: Sesleria dactyloides Nutt. 
Bulbilis Raf., Amer. Month. Mag. 4: 190. 1819. Rafinesque gives a review 
of Nuttall’s Genera of North American Plants. The part relating to Bulbilis is, 
““Sesleria dactyloides must form a peculiar genus by Mr. N’s own account, it 
may be called Bulbilis.” 
Calanthera Kunth, in Hook. Kew Journ. 8: 18. 1856. A single species in- 
cluded, ‘‘ C. dactyloides Kth.—Nutt. Sesleria ... Buffalo grass.” 
