88 
eral nerves, obtuse, a little exceeding the flowering glume, the latter smooth, oblong, 
obtuse, the sides united to the middle or higher, awn from near the base, about three 
times as long as the glume, bent at the middle. Growing in wet soil.—Oregon (T. 
J. Howell). - 
7. A. Macounii Vasey. Bull. Torr. Club, xv. p. 12. Culms 4 to 6 inches high, 
mostly in clusters of two or three, erect or geniculate below; sheaths 2, narrow and 
not much inflated, the lower one one-half to 1 inch long, shorter than its internode, 
the upper one 1 to 1} inches long and much shorter than the culm; ligule membra- 
naceous, about 1 line long, blades very short, the lower 1 inch, the upper 4 to 1 inch 
long, narrow, and acuminate; spike } to 3 inch long; empty glumes slightly united 
below, coarsely ciliate on the keels, the side smooth, obtuse, a little exceeding the 
flowering glume, which is smooth, ovate-oblong, obtuse, the margins united to the 
middle or above, the awn from near the base, 2 to 3 times as long as its glume, bent 
at the middle.—Grows on dry rocks, at Oak Bay, Vancouver Island (John Macoun). 
This species has a close resemblance to the preceding, but seems sufficiently marked 
by the difference in the leaves and sheaths and in the details of the flowers. 
8. A. cespitosus Trin. (Fl. Bor. Am. 1. p, 257.) ‘ Dwarf 2 to 3 inches high, 
spike cylindric-oblong, lax, somewhat interrupted and lobed; empty glumes united 
only at the very base, acutish, rather glabrous ; flowering glume truncate-obtuse, awn 
searcely longer than the glume; styles connate below.” 
This species which is figured in Trinins Tcones Gram. pl. 241 (said to be from North 
America, and referred to in Hooker's Fl. Bor, Am. as probably of Driummond’s collec- 
tion in the Rocky Mountains) has not since been collected so far as I know. 
s 
LYCURUS H. B. K. 
Spikelets 1-flowered, in clusters of 2 or 3 on the short branches of 
the spike or spike-like panicle partly included in the bract-like sheath 
of the upper leaf. Outer glumes membranacecus, acute, complicate, 
carinate toothed, not awned; flowering glume similar, keel thickish 
and herbaceous; palet rather shorter, compressed, 2-nerved or 2-keeled. 
1. L. phleoides H. B. K. Culms tufted, numerous, usually decumbent at base, 8 
to 18 inches hig, slender, branching; leaves narrow, long-pointed; spike cylindrical, 
dense or lax, 1} to 3 inches long, 3 lines thick; spikelets 2 lines long, empty glumes 
with a short body and teeth two or three times as long; floral glume 2 lines long, with 
an awn of equal length.—Westorn Texas, New Mexico and Arizona. 
COLEANTHUS Seid. 
Spikelets 1-flowered, very small, perfect, in small umbellate clusters ; 
outer glumes wanting; flowering glume membranaceous, I-nerved, 
keeled, acuminate or short aristate; palet shorter and wider than the 
flowering glume, 2-keeled, acutely 2-toothed. Stamens 2. Stigmas 2, 
sessile. A minute annual grass. 
1. C. subtilis Seid. Culms low, 1 to 3 inches high, in loose tufts, decumbent at 
base, often branched below; leaves about-4 inch long, curved, smooth; ligule elon- 
gated; sheaths loose and dilated, the upper inflated; panicle 4 to 1 inch long, 
sheathed at the base, mostly simple, with 3 or 4 umbellate clusters; pedicels longer 
than the spikelets, scabrous.—Oregon (7. J. Howell). 
