273 



long, thinly meml)ranaceou8 ; panicle long and narrow, 4 to 7 inches long, loose, 

 the hranclies scabrous, subappressed or spreading during flowering, the lower 

 branchtjs in threes or lives, unequal, 1 to 3 or 4 inches long, the longest naked 

 for the lower third or half, the shorter flowering nearly to the base; the spikelets 

 small, rather crowded, 3- or4-flowcred, 2 lines long; empty glumes narrow, acute, 

 firaooth; floral glumes ovate-oblong, subacute, 1^ lines long, herbaceous and dis- 

 tinctly 5-nerved nearly to the apex, sparsely pubescent all over, and thinly webbed 

 at the base; palet one-fourth shorter than the glume, finely pubescent on the 

 keels. 



Type specimen collected in fir forests near Portland, Oregon, by T. J. Howell in 

 1881 (Xo. 25); also found in California, Washington, and Vancouver Island. It 

 differs from F. trimalis L. in its weaker culms, longer panicle, and pubescent 

 floral glumes. 



Variety microsperma var. nov. Culms more slender, leaves narrower, panicle 

 looser, its branches more capillary, and the spikelets smaller, about li lines 

 long. 



Type specimen collected by C. L. Anderson at Santa Cruz, California, in 1888 

 (No. 99) ; other specimens collected in Washington. 

 Poa kelloggii Vasey, 111. N. A. Gr. ii. 79 (1893), Cnlms 2 to 3 feet high, from a long 

 rootstock; lower leaves 6 to 12 inches long, 2 to 3 lines wide, rather numerous, 

 the upper gradually shorter, thickish, rather rigid; ligule short, lacerate; pani- 

 cle pyramidal, open, 5 to 6 inches long; branches mostly in twos at the rather 

 distant nodes, slightly scabrous, the lower ones 2 to 3 inches long, erect-spread- 

 ing, naked below the middle; spikelets rather few on the slender subdivisions, 

 about 3-flowered, 3 to 4 lines long; empty glumes narrow, acute, unequal; floral 

 glumes ovate-lanceolate, acute, prominently 5-nerv6d, 2^ lines long, smooth, 

 with a narrow, webby tuft at the base; palet slightly shorter than the glume; 

 internode of rachilla smooth, about 1 line long. The base of the culm has the 

 appearance of growing in swampy or wet soil. 



Typo specimen collected by H. N. Bolander in California in 1868 (No. 4705). It 

 has the aspect of P. alsodes Gray, but with larger and less pubescent florets. 

 Poa Iffivis sp.nov. Apparantly annual; culms tufted, pale, slender, erect, smooth, 

 2 to 3 feet high, with two or three distant leaves; radical leaves slender, nar- 

 row, 6 to 8 inches long, those of the culm shorter; ligule acute; sheaths smooth; 

 panicle more or less elongated, narrow, rather loose, 5 to 8 inches long, some- 

 times interrupted below, erect; branches erect or appressed, mostly spikelet- 

 bearing to the base, the lowerin twos or threes, nnequal, the longest 1 to 2inchea 

 long; the spikelets linear, appressed and very short-pediceled, 3 to 5 lines long, 

 about 5-flowered; empty glumes nearly equal, linear-lanceolate, about as long 

 as the lower florets, acute, thin, pale, and scarious, except on the minutely scab- 

 rous midrib ; floral glumes 2 to 2i lines long, linear-oblong, subacute, rounded 

 on the back, 5-nerved, minutely scabrous, slightly pubescent on the keel and 

 marginal nerves near the base, the apex scarious and yellowish-tinged, in age 

 somewhat erose; palet equaling its glume, scabrous on the keels. 



Type specimen collected by F. Lamson-Scribner in Montana in 1883. Other 

 specimens have been collected in the Kocky Mountains from Arizona and Colo- 

 rado to Montana and British America. 

 Poa lettermani sp. nov. Dwarf, densely tnfted, culms 2 to 4 inches high; leaves 

 mostly radical, flat, 1 to 2 inches long, ^ to 1 line wide, the lower sheaths wide 

 and loose; ligule rather conspicuous, acute; cauline leaves 1 or 2, about 1 inch 

 long; panicle -i- to 1 inch long, oblong, rather dense; branches mostly in twos, 

 short, erect, with 1 to 3 spikelets each; spikelets 1^ to 2 lines long, 2-to4- 

 flowered, purplish ; empty glumes nearly as long aa the epikelet, exceeding the 

 adjacent florets, oblong-lanceolate, acute, nearly equal, smooth ; floral glumes 3 

 to li lines long, ovate-oblong, acute or subobtose, obscurely nerved, smooth. 



