326 LAMSON-SCRIBNER: NOTES ON MUHLENBERGIA 
The first specimen collected, mo. 2915, is assumed to be the type. 
It agrees throughout with the type of M. Lemmoni, and is cer- 
tainly identical with that species. 
Revised diagnosis of M. Lemmonz: 
Aslender, wiry, erect or ascending, leafy perennial, 3-5 dm. high 
from creeping woody rootstocks, with narrow flat scabrous leaves, 
strict, densely flowered panicles and short-awned or awnless spike- 
lets, 3-4 mm.long. Culms fasciculately branched at the base, very 
minutely scabropubescent at and for a short distance below the 
nodes; sheaths terete, usually exceeding the internodes in length, 
glabrous or minutely pubescent towards the base; ligule about 1 
mm. long, more or less lacerate, ciliate on the edge; leaves 7-8 on 
each culm, 2—5 cm. long, I-3 mm. wide, minutely strigose-pubes- 
cent above, scabrous on the back, revolute in drying, with slender 
attenuate tips; panicles 5-10 cm. long, main axis triangular or 
compressed, scabrous, the lower branches often in pairs, I-2 cm. 
long, the upper usually solitary and flower-bearing to the base, all 
erect or appressed; spikelets densely crowded and more or less 
glomerate on very short pubescent pedicels; glumes broadly ovate- 
lanceolate, abruptly acuminate and subaristate or pointed with a 
short awn, varying to lanceolate and gradually acuminate, nearly 
equal, as long as or a little shorter than. the lemmas, scabro- 
pubescent on the keel above, glabrous towards the base; lemmas 
3-3-5 mm. long, broadly lanceolate or ovate, minutely 2-toothed at 
the apex, rather densely villous from near the middle to the base; 
awns I-2 mm. long, occasionally reduced to a mere mucro, very 
rarely 5-6 mm. long; palea broadly lanceolate or oblong, about 
equaling the lemmas, villous in the lower half. 
This species is represented in the National Herbarium by the 
following specimens: 
Texas: G. C. Nealley 132, 1892; no. 397 from the Chico Mts., 
1889 (a nearly awnless form); G. C. Nealley 726, the type. ; 
Arizona: J. G. Lemmon 392, 1883 (plant a little coarser than 
usual and panicles more densely flowered); Lemmon 2915, 1882, 
from the Huachuca Mts. (type of M. huachucana Vasey); Canby 
58, 1894 (resembles the following specimens collected by Wilcox, 
in having awns 5-7 mm. long). Specimens from the same region 
collected by Dr. T. E. Wilcox, distributed without number, have 
awns 5-10 mm. long. This is a form apparently connecting M. 
Lemmoni with the next species. 
Mexico: Pringle 395, 1885; Pringle 8263, 1889, from the 
