63 
equal, both woolly-pubescent on the ucrves aud margins,—From Texas westward 
and southward into Mexico. 
This species is peculiar in its thickish, persistent glumes and very pubescent 
flowers. 
22, §. Jonesii Vasey. Bot. Gaz. vi. p. 296. Culms densely tufted, erect, 1 to 14 
feet high, wiry; radical leaves numerous, short, rigid, and involute, except the 
lowest; culm with 1 or 2 leaves below, the blade about 1 inch long, setaceous, 
sheath .four times as long, scabrous; panicle erect, thin, 14 to 3 inches long, rays 
solitary, appressed, the lower 1 to 14 inches long, subdivided from the lower 
third; spikelets mostly very short pediceled, about 1} lines long; glumes about one- 
third as long as the flower, broad, obtuse or truncate, and the apex erosely toothed, 
thin, and purplish; flower with a distinct pedicel or callus; the flowering glume and 
palet. much alike in texture, firmly membraneous, 1-nerved, finely scabrous and pubes- 
cent below, 1 to 14 lines long; the palet narrower and but little shorter, after flower- 
ing becoming more elongated, cylindrical, and. pointed.—Soda Springs, Cal. (M, 
E. Jones). 
23, S.junceus Kth. (Gray’s Manual, 6thed., p. 646.) Culms cespitose, 14 to 2 feet 
high, simple, smooth, naked above ; leaves slender, involute, the lower elongated, 
narrow ; panicle narrow; lanceolate or almost linear, open, the branches in threes or 
fives below, Linch or less long, few-flowered; spikelets 1} lines long, purplish, empty 
glumes lance-ovate, acute or acutish, the lower, half to two-thirds as long as the 
upper, the latter as long as the flowering glume.—Rare in Texas, common eastward. 
24. S. compressus Kth. (Vilfa compressa Trin.; Agrostis compressa Torr.; Agrostis 
Torreyana, Kk. & 8.) (Gray’s Manual, 6th ed., p.647.) “* Very smooth, leafy to the top ; 
culms tufted, stout, very flat; sheaths flattened, much longer than the internodes; 
leaves erect, narrow, conduplicate-channeled; empty glumes acutish, about one- 
third shorter than the obtuse flowering one; panicle 8 to 12 inches long; spikelets 1 
line long, parplish. Forming strong tussocks, 1 to 12 feet high.—Bogs on Long 
Island and io the pine barrens of New Jersey.” | 
25. S. serotinus Gray. (Gray’s Manual, 6th ed., p. 647.) ‘* Smooth; culms very 
slender, flattish (3 to 15inches high), few-flowered; leaves very slender, channeled ; 
panicle soon much exserted, the diffuse capillary branches scattered ; glumes ovate, 
obtuse, about half the length of the flower, A very delicate grass ; the spikelets half 
a line long.--Sandy wet places, Maine, to New Jersey and Michigan.” 
26. S. Texanus Vasey. Contr. Nat. Herb. 1. p. 57. Perennial; culms 1 foot 
high, rigid below, rarely branching below, the upper half occupied by the capil- 
lary panicle; leaves lirear-lanceolate, rigid, 2 to 3 inches long, acuminate, rough 
above; the lower sheaths and ligule covered with scattered white hairs; panicle half 
the length of the plant, sheathed at the base, becoming diffuse, the branches capil- 
lary, mostly single and few-flowered, the lower 2 to 3 inches long; spikelets about 1 
line long, oo capillary pedicels; empty glumes unequal, the lower one acute, less 
than half as long as the upper, the latter as long as the spikelet.—Presidio County, 
Texas (G. C, Nealley). 
Resembles S. asperifolius, but with simple, erect culms and more rigid. - 
27, S$. Buckleyi Vasey. Bull. Torr. Club, X. p. 128. Culms 24 to 3 feet high, 
leafy, erect ; leaves 1 to 2 feet long, narrow, terminating in a long, slender point; 
sheaths shorter than internodes; panicle 1 to 14 feet long, diffuse, thin, branches 
mostly single, sometimes the lower verticillate, 8 to 5 inches long, flowering above 
the middle, the branchlets short and curved; spikelets very short, glume pedicelled, 
lanceolate acute, the lower one-half and the second two-thirds as long as the third, 
the last a little shorter than the palet.—Texas (Nealley) to Mexico (Pringle). 
28. S. Bolanderi Vasey. Bot. Gaz. x1. p. 337. Culms slender, about a foot high, 
decumbent below, smooth; leaves narrowly linear, flaccid; radical ones about 
6 inches long; cauline ones similar, 1 to 2 inches long; ligule short and obtuse ; upper 
half of stem naked; panicle 2 to 3 inches long, sparsely-flowered, open, lax, lower 
