144 SYNOPSIS OF THE FLORA OF COLORADO. 
MUHLENBERGIA PUNGENS, Thurber, Proc. Acad. Phil., March, 1863, p. 
78, Note. Culm from a creeping root-stock, 19-14° high; leaves r igid, 
convolute, pungent, spreading, 1/-14’ long, less than 1” wide; ligule 
prog ili ate ; panic ‘le 3/4! long; branches solitary, scattered, naked at 
base, halos lately branching; pedicels capillary, minutely scabrous, 
many times longer than the spikelets, awn 23” long; glumes almost 
equal or nearly equal, acuminate or bristly- apiculate, 4 shorter’ than 
the flower; palets naked, furnis - with a minute rt ements lower 
palet scabrous, acute, produced into a long, rough a n, (4/-1’,) upper 
palet scarcely shorter; nerves arate two-bristled; Maas 3.—Hall 
& Harbour "ep 
Ju. 
see 
irae RGIA GRACILLIMA, Torr. Bot. Whippl., Pacif. Rh. R. Rep. 
4, Si eamsiior, glabrous; culm simple, 6/—12/ high; ; leaves very nar- 
row, eos olute, short, 1/-13’, mostly in. radical tufts; ligule elongated, 
cleft; pani cle 5/6 long, pyra ee 25 ary; branches sub-solitary, 
widely spreading; ; pedicels aes ce longer than the spikelet; spike- 
lets lanceolate, mostly purplish, 14! long; glumes acute, lanceolate, 
scarcely Giies shorter than the palets; lower palet glabrous, 3-nerved, 
minutely bifid, with a straight awn of equal length; “callus naked.—On 
the plains.—Hall & Harbour, 642, Colorado Springs, Porter. Caton 
City, Brandegee. 
MUHLENBERGIA GRACILIS, Trin. Steud. Glum., 179. Root fibrous ; 
culm erect, slender, branching from the base, 1°-15° high, minutely 
sc gs as well as the sheaths ; node smooth j leaves erect, berets 
erose-obtuse or acute, sometimes bearing anawn, twice long. than the 
palets or a little shorter ; lower palet wholly pilose, or the middle of the 
back and margins, bea ring an awn 4-9” in length, upper one on the 
nerves short-pilose half-way up.—Hail & Har sity 664: Canby ; Bran- 
degee ; Meehan. Ute Pass and South Park, Por 
MUHLENBERGIA TEXANA, Thurb. in nk Mee "Bowed ined. ‘Culms 
geniculately decumbent, branching; panicle ovoid, few flowered, rays 
solitary or in pairs, naked below, pedicels equaling or twice as long a 
the spikelets; glumes shorter than the floret, carinately 1-nerved, set- 
nate; palets pilose, the lower terminated by an awn 
thrice its length and equaled = exceeded by the upper one; callus con 
' spicuons, glabrous.—This species, which seems to be v very common in 
Texas and Arizona, is quite distinct in habit from others of the genus. 
The slender and branebing culms are from one to two feet long, often 
decumbent for their whole length and geniculate at the a ; sheaths 
usually shorter than the internodes, mostly smooth; ligule 4/ long, 
lacerate; leaves (except in specimens from the arid sable: lands of Ari- 
zona) plane, 1’-13' long, 3” wide at base, setaceously acuminate at apex, 
and scabrous, especially above; panicle about 3’ long and 2’ broad, green 
or dark-red, included at base except t when old, its branches naked below 
for 4 or 4 their length and 1-3 flowered ; spikelets 13” long; eo 
poset lanceolate, upper slightly: longer.—Texas, Bigelow; Pa 
Wright, 734. Arizona, Hayes; Coues; Palmer.” Fremont County, Col- 
orado, recede ; Greene. 
MUHLENBERGIA SYLVATICA, T. & @, var. (?) SETIGLUMIS, Watson, 
King’s Rep. Galas 1° high, nearly erect; panicle contracted nearly as in 
a; the branches solitary and densel y flowered, to the 
base ; glumes attenuate into a scabrous bristle, 24!"-3!" long; the palet, 
