oars 
SYNOPSIS OF THE FLORA OF COLORADO. 147 
awned above the middle, the outer side 2-nerved, the inner margin 
. narrower and infolded, the upper glume emarginate or erose, cus- 
pidate with a strong mid-nerve, the broader outer side also 2-3-nerved ; 
: siete Pari oik or — toothed at the apex, the lower 3-nerved, 
the upper 2-nerved.—Gree 
BOUTELOUA oLndostactyA, Torr.—Hall & Harbour, 636. Near Den- 
ver, Dr. Smith. B. H. Smith. cp onaile "eid xs, Pr orter. Caton City, 
Brandegee. Common on the plain 
Lapa HIRSUTA, Lag. een Park, Canby. 
Bour eit CURTIPENDULA, Gray.—Hall & Harbour. Colorado 
Boringe,” Por 
UCHLOE ty hist otis Engelm.— Trans. Saint Louis. Acad., vol. 
1, p. 432, pl. Zand 14. De ensely tufted, spreading by stolons, forming 
broad mats : culms 3/—6' long; flowering stems of on male plant 4/6! 
long, glabrous or slightly hairy; leaves 2/4’ long, 4-14” wide, nearly 
smooth; sheaths striate, glabreus, strongly bearded at the throat; i ar 
36" long; i agement alternate i in 2 rows, uppermost abortive, ‘prist 
] ; lower glume ovate- Janceolate, with a scarious Perino ; 
upper glume sei longer, ovate; lower palet convex, 3-nerved, upper 
one 2-nerved, two minute scales "at the margin and inside of the lower 
we stamens 3. Stems of the female plant much shorter than the 
leave s, 14-2’ high; heads 3/-3$” long; glumes becoming ligneous > 
spikes or heads usually 2; at maturity becoming thi 
Including the loose grain.—The celebrated “ buffalo-grass,” known 
hunters and trappers. as one of the most nutritious grasses, on which for 
a part of the year subsist and fatten the immense herds of buffalo and 
the cattle of the hunter and emigrant. It extends on the elevated plains 
from the British Possessions southw ard and westward into Mexico and 
d the mal 
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New Mexico. Nutt: , Who had only t lant, referred it to the 
genus Sesleria, ang described it as 8. dacwlowdes (Gen. ) ay sais 
e 
founded another genus on the female plant, Antephora avilliflora, (Gl um. 
i, p.111.) The tru rerelaHigHehiy between them was first detected by Dr. 
Engelmann, and clearly set forth by him in his masterly article in the 
Trans. Saiy a ouis Acad. Plains around Denver, Dr. Smith. Hall & 
Harbour, 
“Moros? SQUARROSA, Torr. Bot. Jee, nied R. RB. tha 4, p. 158. 
Bue E, k, Engel ri plant. Spikes 1-sided 
2ra pide © tial ate 2 3- Pete ch Ghens Tes oy lower sa nary raleuds of 
egual length, longer than the glumes; lowe one 3-nerve , mucronate; upper one 
“herve squa ume in pairs, tania, émarginiate. Stamens 3; anthers linear. Rudi- 
seo Spi 
ovate, nerveless, pale, trifid at the seal pis nerv Lower palet (internal as to 
the head) short ter, 3-nerved, herbaceous, pitta: Sr hag per palet epg nerved 
e flowers. Rudim the ns 3, Ovary len 
19 
Wa us. 
styles, plumose with simple hairs, exsert from the apex of the flower. Caryopsis free, 
included in a Pee. te t length gran “head, sublenticular, flat on the outside, 
(toward the lower alors) convex on the inner sid 
*Munroa, Torr. Spike caps, leafy; apikaleta 3, 2-6-flow ; flowers 
sessile ; 
2+ranked ; terminal one abortive. lumes 2, subo ite, much Pr ekerior than a the flow- 
mucronate. Palea 2, herbaceous, rigid, in the lowest spikelet naked, mucronate or 
-awned, not keeled, equilateral, in the oc ram ak spikelet bearded toward the 
base ; } caryopsis very smooth, covered by the upper palea. 
