38 
a 
Elymus intermedius Scribn. € Smith, sp. nov. 
Culms rather stout, erect from a ieee root; leafy, kou glabrous, 2 to 3 us 
high; sheaths striate, glabrous, longer than the internodes, 
inflated; ligule almost obsolete; leaves linear, erect, sese, 15 the filiform or 
acuminate apex, scabrous throughout, 4 to 7 inches long, 2 to 3 lines wide. Spike 
slender, erect, 2} to 4 inches long, Hear barely exserted from the upper leaf- 
sheath, the rachis 1 spikelets mostly in twos or rarely threes, erect; empty 
glumes linear-lanceolate, or linear, idi and coriaceous at the base, 3- to 
5-nerved above, hirsute, 5 lines long, 1 to 14 lines wide, tipped with a scabrous awn 
shorter than or about as long as the glume; flowering glume on a short stipe, lan- 
voce acute, 5-nerved, hirsute-pubescent, 4 to 43 lines long, tipped with a slender, 
scabrous awn 7 to 8 lines r^ palea a little shorter than 3 glume, hispid ou the 
Miel above the middle, obtuse or retuse; grain adherent to both flowering glume 
and palea, 24 lines long Sent compressed, sulcate next the palea, acute at the 
base, rounded and hispid at the apex; hilum extending the full length of the grain. 
vDistinguished from E. canadensis by its erect spikes and wider, short-awned empty 
at the base; and by its hirsute spikelets. From Maine to Virginia, west to Illinois 
aud Nebraska. 
\ 
yore Elymus angustus Trin. in Ledb. Fl. Alt., I, 119. 
A rather rigid, erect, cespitose grass 1} to 3 feet high, with flat leaves and minutely 
pubescent spikes 4 to 7 inches long. Culms c:espitose, striate, smooth, somewhat 
geniculate at the lower nodes; sheaths about equaling the internodes, monum glau- 
apex. Spikes rather slender, their bases inelosed in the uppermost leaf sheaths 
finally exserted ; rachis pubescent. Spikelets in pairs, 2- to3-flowered, erect appressed, 
ume 
back below, 4 to 5 lines long, tipped with straight scabrous awns 2 to 3 lines long; 
palea shorter than the glume, minutely bidentate. This plant agrees so well wit 
pieal speeimens in the National Herbarium that we have no hesitation in referring 
it to that species. 
Related to E. dasystachys Trin. Spikelets fewer-flowered and awns longer 
Wyoming, along the banks of Green River. No. 284 C. L, Shear, June 95, 1895. 
This seems to be the first time that this species has been collected within our 
itory. 
CHT OCHLOA Scribn., nom. nov. Setaria Beauv. Voies qui Kuntze in 
part, not R. Br. Ixophorus Nash, not Schlee 
The name Selaria, which has been taken up by many botanists for a number of well- 
known weedy grasses with dense, spike-like, bristly panicles, was first applied by 
Beauvois (in Oware and Benin.) to a species of Pennisetum. At an earlier date the 
ame was.employed by Acharius to designate a genus of lichens. According to 
all rules of botanical nomenciature, this last fact renders the name untenable for 
designating a genus of flowering plante; and were this not the case, its first appli- 
i 
e 
referred the grasses in question to the genus Panicum, from the species of which they 
differ only in the prose t sete issuing from the pedicels. of. the spikelets below 
their articulation. It is which 1 
them to be separated from „ in which genus the carlier-deseribed species 
= 
e 
vx 
