277 



loose, the rather distant branches capillary, flexnons. erect-spreading, the lower 

 in threes or fives, the upper in twoa, at the 8 to 12 nodes of the smooth erect 

 axis, 1 to 3 inches long, spikelet-bearing ahove the middle ; spikelets somewhat 

 clustered, on short pedicels, loosely 3- to 4-liowered, about 2^ lines long; empty 

 glumes oblong, subacute, smooth; floral glumes nearly 2 lines long, linear- 

 oblong, obtuse, scarious at the apex, prominently 5-nerved, upper part some- 

 what scabrous, lower half white-pubescent, thinly webbed at the base; thewhole 

 plant grayish in color. 



Type specimen collected on mountain aides at Raton, New Mexico, at an alti- 

 tude of 7,000 or 8,000 feet, by S. M. Tracy, in 1887. It somewhat resembles 

 Poa rejlexa Vasey & Scribn,, but is larger, with longer panicle, larger spikelets, 

 and larger floral glumes. 

 Festuca ambigua sp. nov. Perennial ; culms 2 to 3 feet high, stout, the base clothed 

 with numerous rather rigid leaves, 6 to 8 inches long, 1 to 2 lines wide, flat or 

 becoming somewhat involute; the culm with about 4 leaves, the upper of which 

 is 3 to 4 inches long, and the lower 6 to 8 inches, attenuate-pointed, smoothisb, 



2 lines wide, flat or becoming involute, the sheaths scabrous, longer than the 

 internodes ; ligule nearly obsolete ; panicle 6 to 8 inches long, its nodes distinct ; 

 branches rather capillary, spreading and flexuous, rather one-sided, chiefly in 

 pairs, the longer one (3 to 4 inches long) spikelet-bearing from the middle or 

 below, the shorter one {1 to 2 inches) subdivided near the base, somewhat scab- 

 rous; spikelets purplish, loosely 3- to 4-flowered, the florets rather distant and 

 spreading, the rachillaroughish pubescent, disarticulating at a point midway be- 

 tween the florets ; empty glumes narrowly lanceolate, acute, the upper obscurely 

 3-nerved, 2 lines long, the lower little more than one-half as long; floral glumes 3 

 to 4 lines long, narrowly lanceolate, obscurely 5-nerved, sparsely scabrous, acum- 

 inate with 2 small, unequal teeth, awn 4 to 6 lines long ; palet equaling its glume, 

 bidentate and slightly ciliate at the apex. 



Type specimen collected by T. J. Howell, in Oregon, in 1881 (No. 19) ; Also 

 collected in California by Kellogg and Harford (No. 1116), and at Santa Cruz, 

 in 1888, by C. L. Anderson. A stout and rather handsome grass, the upper 

 sheath about 10 inches long. The panicle is loose and drooping, and the long 

 awns conspicuous. 



Festuca arizonica sp. nov. Culms tufted, firm, erect, about 2 feet high; leaves 

 very numerous at the base, 3 to 5 on the culm, stiff, filiform-setaceous, scabrous- 

 margined, the upper 2 or 3 with long sheaths, and blades 6 to 10 inches long, the 

 upper one equaling or exceeding the panicle; ligule short, blunt, with promi- 

 nent auricles: panicle narrow, 3 to 5 inches long; branches alternate, erect 

 and ai>pres8ed; the lower 2 to 3 inches long, subdivided from below the middle; 

 spikelets about 5 lines long, appressed to the branches, lance-linear or oblong- 

 linear, on very abort pedicels, 4- to 5-flowered; empty glumes unequal, the first 

 about 2 lines long, linear, l-nerved; the second 2\ to 3 lines long, acute or 

 Hubobtuse, 3-nerved, scarious margined; floral glumes 3 to 3^ lines long, thick, 

 acuminate, with an awn ^ to 1 line long, rather obscurely 5-nerved, rounded on 

 the back below, slightly scabrous or nearly smooth; palet equaling its glume, 

 obtuse, minutely scabrous on the keels. 



Type specimen collected by S. M. Tracy near Flagstafi', Arizona, in 1887 (No. 

 118). Other specimens have been collected at various points in Arizona, New 

 Mexico, and Colorado. Well marked by its long, setaceous leaves, narrow pani- 

 cles, and pale, ashy color. It grows in pine woods, is commonly called "pine 

 grass," and is said to be much sought by cattle. 



Festuca californica sp. nov. Culms 3 to 4 feet high, thick and stout, smooth, crowded 

 below witli leafless sheaths; radical leaves numerous, one-half asloug as the culm, 

 scabrous, rigid, flat or becoming involute; those of the culm 2 or 3, the upper 



3 to 6 inches long; slioaths long, striate, more or less scabrous; ligule a villous 



2G(;()-No. 8 2 



