14 
9. SITANTON GLABRUM J. G. Smith, sp. nov. 
Culms erect, terete, smooth and shining, glaucous. Sheaths glaucous, glabrous, 
rather closely enveloping and shorter than the internodes, scarious along the 
St O 
smooth and er e on the back, seabrous-pubescent along the nerves above. 
Spike 5 to 8 em. long, slender, subflexuous, its base inclosed in the swollen 
uppermost . Empty glumes bifid tion the very base, the lobes subulate, 
setaceous, 6 to 8 em. long, mbie xuous, slender, divaricate. Flowering glume 7 
to m. long, rounded on the back, smooth and shining for its lower two-thirds, 
linear-laneeolate, aeute, entire or minutely bifid at the apex, tipped with a 
slender, rigid, setaceous awn 4 to 5 em.long. Palea as long as the flowering 
cepas ue scabrous on the nerves above. Internodes of the rachis 
eate, compressed, about 3 mm. long. 
7 Tre casted by Coville and Funston, No. 914, near Crystal Spring, Coso Mountains, 
a, June 12, 1891. Also cua by J. A. Allen, California, without date 
or qud No. 821, Hall, San Jacinto Mountains, may be placed here; and also 
Purpus, No. 5289, Pah Mountains, 1897. The latter has the habit of typical 
S. glabrum, but the leaves and sheaths are minutely soft n and the spike- 
lets and 1 glumes poor Other specimens examined are: L. Schoenefeldt, 
No. a, Cal, e 14, 1894; and C. V. Piper, No. 1952, rus slopes Mount 
Rainier, Wash. 2 2.100 a pe 1895. 
10. SITANION INSULARE J. G. Smith, sp. nov. 
Culms slender, erect, terete, glabrous. Nodes glabrous. Culmleaves4 or 5. Sheaths 
glabrous, closely enveloping the culm, open at the throat, shorter than the inter- 
nodes. Ligule almost obsolete. Blades linear, 1 to 1.5 dm. long, glabrous on 
along the margins. Spike slender, 5 to 8 c m.long. Empty glumes lanceolate, 
bifid and 2-awned, 4 to 5 mm Jong, 2 mm. wide, tipped with divergent, slender, 
scabrous awns, 10 to 20 mm. long. Flowering glume 8 mm. long, linear-lanceo- 
late, smooth ind shining, glabrous for the lower two-thirds, rounded on the 
back below, keeled above, 3-toothed, the middle nerve extending into a stout, 
scabrous, divaricate awn about 15 mm. long; lateral teeth 1 to 2 mm. long. 
Palea as long as the flowering glume, 2-toothed at the apex. Internodes of the 
cip linear, dilated above, sharply 2-edged, scabrous on the margins, 7 to 10 
ong. 
Wine. Soles by Sereno Watson, No. 1338, Carrington Island, Salt Lake, Utah, 
Ju 1869. 
This undis is quite distinct from any other in the National Herbarium. It has the 
broad empty Lieu of Elymus, but two-parted, as in Eusitanion, with divaricate 
awns, Ihe empty amen are inse rted as in Sitanion, while the form of the 
spikelet cies of Agropyron. 
Asi in the other Sitanion species the rachis breaks up into segments at maturity. 
li. SITANION CINEREUM J. G. Smith, sp. nov. 
Slender, ascending, leafy perennial, 2 to 3 dm. high, the entire plant MEI qu * 
a close, dense pubescence. Innovations as long as the culms. Culms dies 
terete, pubescent. Nodes glabrous. Sheaths closely enveloping the internodes 
and shorter than them, densely Weed petite Ligule almost obsolete. 
Blades linear, rigid, involute, the uppermost 5 to 7, the lower 15 to 20 cm. long, 
densely strigose-pubescent on the nerves abov e, soft-pubescent or hirsute below. 
Spike slender, 4 to 5 em. long. Empty glumes very scabrous, bifid, 2-awned, 
mm. long, rounded on the back, scabrous throughout, 3-nerved toward the apex, 
3-awned, the lateral awns very slender, 2 to 4 mm. long, the middle one stout, 
