LAMSON-SCRIBNER: NOTES ON MUHLENBERGIA S21 
Original description: ‘‘Culmo subdecumbente 12—18 pollicari; 
foliis convolutis apice setaceis glabriusculis; vaginis internodio 
parum brevioribus; ligulis membranaceis linearibus subobtusis; 
paniculis 2-3 pollicaribus interruptis paucifloris; glumis ovatis 
acutis aequalibus subcarinatis valvula 2/3 brevioribus; valvulis 
lanceolatis inferiore valde 3-nervia et longe aristata; spiculis 
rufescentibus; carinis et nervis subviridescentibus. 
“Hillsides Western Texas. 
“Panicle terminal with short appressed branchlets of 4-6 
flowers each of a brownish red color, bristles longer than the 
flowers.” (Buckley I. c.) 
Dr. Gray (Proc. Acad. Nat. Sci. Phila. 1862: 334. 1863) says 
that Buckley’s M. pauciflora is ‘‘ described from a scanty depauper- 
ate specimen of Wright’s no. 732." This number is represented 
in the National Herbarium and according to the ticket was ‘“‘col- 
lected in Expedition from Western Texas to El Paso, New Mexico, 
Oct., 1849." The specimen is branched at the lower nodes, 
which show a malformation apparently caused by a mite, and 
itis probable that the branching of the culms in this specimen 
is due to these insect attacks. The effect of insect work is further 
manifest in a more or less imperfect development of the panicle 
and spikelets. Similar specimens were collected in the Guada- 
loupe Mts. of western Texas by Dr. V. Havard in 1881. In both 
Wright’s and Havard’s specimens the glumes are broadly ovate, 
barely acute or abruptly short-cuspidate at the tip, and about 
half the length of the lemmas, which are naked at the base. The 
entire absence of hairs at the base of the lemmas is a further 
indication of abnormality in this case. In apparently healthy 
and normal plants the slender wiry erect culms are unbranched, 
the panicles rather more densely and abundantly flowered, the 
glumes are somewhat longer and with long-subulate points often 
equaling the lemmas, which are barbate on each side at the base 
with a dense tuft of very short hairs. The type of M. neo-mexicana 
Vasey from Las Vegas, New Mexico, and of M. sylvatica Pringlei 
from the Santa Rita Mts. of Arizona, collected by C. G. Pringle 
in 1881, are normally developed specimens of the species M. 
pauciflora, although Pringle’s specimens are immature. The 
original description of M. sylvatica Pringlei differs somewhat from 
