Pause e TS 
ES AS E IE 
» n d 
37 
shorter. Spikelets in pairs, one sub-sessile, the other raised on a pedicel about as 
long as itself. Spikelets ovate-lanceolate, acute, glabrous, about 2 lines long; first 
glume ovate, acute, strongly 3-nerved, one-half to three-fourths the length of the 
spikelet, scabrous on the mid-nerve above; second glume ovate-lanceolate, acumi- 
nate, 5-nerved, nearly clasping the similar empty third glume; base of the fourth 
glume surrounded by the third; fourth glume about 14 lines long, oblong-lanceolate, 
obtuse, Py erved, very smooth dl closely rolled about the palea, which is of similar 
texture. «Old fie lds about Izam € No, 804. George F. Gaumer, September, 1895." 
Yucatan. nom. vulg., “Xkanchim 
(226% Triodia drummondii Scribn. & Kearney, sp. nov. 
A rather slender, erect perennial, 3 to 4 feet high from strong, scaly rootstocks, 
with long (8 to 16 inches) radical leaves, and contracted panicles 6 to 8 inches long. 
Culms simple, naked above, smooth; nodes 2 to 4, dark purple; sheaths of the basal 
e crowded, somewhat compressed, closely imbriented sparsely to densely pilose, 
ith long white hairs; upper leaf sheaths shorter than the e internodes, glabrous or 
loe at the throat; outa a dense fringe of ies short white hairs; blades of the 
radieal leaves about 2j lines wide, attenuate, acuminate and notado toward the 
apex, shortly pilose below near the base; uppermost cauline leaf 13 inches long 
or less. Panicle somewhat drooping, simple, the appressed rays solitary, the lower- 
most 1 to 2 inches long, slightly glandular, but not villose, in the axils. Spikelets 
4 to 5 lines long, usually 3-flowered; outer glumes ovate-acute, 1-nerved, whitish 
or purplish, except the prominent nerve, 2 to 2] lines long, subequal; third or flower- 
ing glume 2} to 3 lines long, ovate-lanceolate, bifid, 3-nerved, the nerves extending 
into short, awn-like teeth, the central one equaling or a little exceeding the narrow 
obtuse lobes of the glume, nerves ciliate in the lower half with rather long, erect, 
white hairs; palea slightly shorter or a little longer Hines the glume, blame 
obtuse, minutely ciliolate along the keels o the a 
v Jacksonville, Fla. (Drummond); Aiken, S. C. icons Biloxi, Miss., growing in 
dry soil in low pine barrens (324 Kooy 1896). There is also a specimen in the 
National Herbarium from Georgia, without locality. 
Allied to Triodia seslerioides, but distinguished by its scaly rootstocks (resembling 
those of Panicum anceps), pilose sheaths, contracted, simple panicles, and larger, 
usually fewer-flowered, spikelets. 
55 7 / g Elymus robustus Seribn. & Smith, sp. nov. 
Stout, erect cæspitose perennials 3 to 6 feet high, with leafy culms and a stout 
e. 
icles; blades 
stricted at t 1 =o rigid, coriaceous, Mol an cout, PORER to the 
pungently pointed apex, 4 to 10 lines wide, 9 to 15 inches long, strongly scabrous on 
both sides and on the margin; spike shortly exserted from the nppermost leaf sheath, 
cylindrical, erect, 5 to 7 para long, 1 to 2 inches in diameter; rachis compressed, 
APEE and glabrous except on the scabrous angles; spikelets in threes or fours, 
o 4-flowered; empty glumes 5 to 6 lines long, linear, subulate, rigid, erect, 2- to 
3 fipo with an awn twice as long; flowering glumes 6 to 8 lines long, nar- 
rowly linear-lanceolate, attennate Mei dorsaliy compressed, elevated on a short 
stipe, 5-nerved above the middle, minutely scabrous, or pubescent, bifid at the 
apex and awned from Aetius the setaceous teeth with a stout straight or curving 
scabrous awn 1} to 2 inches long; palea 1 iine shorter than its glume, linear, acute, 
broadly sulcate, bicarinate, scabrous on the keels above. 
Has been regarded a variety of E. ca Linn 
ns examined fom Ilinois, ipis; Kinsa, am and Montana. 
