No. 28. 

 ALOPECURUS SACCATUS Vasey, Bot. Gaz. vi. 290. 



Plant tufted, apparently annual. 



Culm erect or slightly geniculate below, simple, smooth, nodes brown, 5 to 10 

 inches high. 



Leaves of culm usually 3; sheaths rather loose, the upper one inflated, slightly 

 roughened, usually shorter than the internodes; blades narrow, rough on both sides, 1 

 to 2 inches long; ligule membranaceous, 1£ lines long. 



Inflorescence a comparatively loosely-flowered, spicate panicle 1 to 1£ inches long, 

 often included. 



Spikelets compressed, elliptical, 1-flowered, 2 lines long; empty glumes united at 

 the base, ovate-oblong, barely acute, carinate, scarious at the apex, puberulent through- 

 out, ciliate on the keel and lateral nerves, 2 lines long; floral glume broadly oblong, 

 truncate, margins united to the middle or above, smooth except the ciliate apex, 

 4-nerved, 2 lines long; awn arising near the base of the glume, twisted, bent, 3 to 4 

 lines long; palet wanting; grain flattened, broadly lanceolate, oblique, brown, 1 line 

 long. 



Plate XXVIII; a, spikelet enlarged about 6 times; b, empty glumes; c, floral 

 glume, side view ; d, grain. 



Eastern Oregon. 



