MANUAL OF THE GRASSES OF THE UNITED STATES 



155 



lower 1.8 mm. long; grain 0.8 mm. 

 long. O — Fields, waste places, 

 and sandy river banks, Oregon (bal- 

 last, Portland); Colorado to Arizona 

 and California. 



23. Eragrostis lutescens Scribn. 

 (Fig. 208.) Annual; culms freely 

 branching at base, erect or ascending, 

 5 to 20 cm. tall; sheaths and blades 

 with numerous glandular depressions; 

 blades flat; panicles numerous, nar- 

 row, erect, pale or yellowish green, 2 

 to 10 cm. long, the branches ascending 

 or appressed, beset with glandular 

 depressions; spikelets 6- to 10-flow- 

 ered, 5 to 7 mm. long, compressed; 

 glumes acute, 1.5 and 2 mm. long; 

 lemmas about 2 mm. long, acute, the 

 nerves prominent ; palea 1.5 mm. long. 

 — Sandy shores, Idaho to Wash- 

 ington, south to Colorado, Arizona, 

 and California; Mexico. 



24. Eragrostis ciiianensis (All.) 

 Lutati. Stinkgrass. (Fig. 209.) 

 Weedy annual with disagreeable odor 

 when fresh; culms ascending or 

 spreading, 10 to 50 cm. tall, with a 

 ring of glands below the nodes; foliage 

 sparsely beset with glandular depres- 

 sions, the sheaths pilose at the throat ; 

 blades flat, 2 to 7 mm. wide; panicle 

 erect, dark gray green to tawny, usu- 

 ally rather condensed, sometimes, es- 

 pecially in the Southwest, open, 5 to 

 20 cm. long, the branches ascending; 

 spikelets oblong, compressed, 10- to 

 40-flowered, 5 to 15 mm. long, 2.5 to 

 3 mm. wide; lemmas in side view 

 ovate, acutish, about 2.5 mm. long, 1 

 mm. wide from keel to margin, the 

 keel scabrous toward apex and beset 

 with a few glands, the lateral nerves 

 prominent; palea about two-thirds as 

 long as the lemma, minutely ciliate on 

 the keels; grain ovoid, plump, 0.7 mm. 

 long; anthers 0.5 mm. long. O (E. 

 major Host; E. megastachya Link.) — 

 Cultivated ground, fields, and waste 

 places, Maine to Washington, south 

 throughout the United States, spar- 

 ingly in the Northwest, absent from 

 the higher mountains; Mexico and 

 West Indies, south to Argentina; in- 

 troduced from the Old World. 



Figure 208. — Eragrostis lutescens. Plant, X Yi ', floret, 

 X 10. (Type.) 



25. Eragrostis poaeoides Beau v. ex 

 Roem. and Schult. (Fig. 210.) An- 

 nual; resembling E. ciiianensis, 

 mostly more slender; panicles rather 

 more open, the spikelets smaller, 1.5 

 to 2 mm. wide, the lemmas about 2 

 mm. long, the glands sometimes ob- 

 scure; anthers about 0.2 mm. long. 

 O (E. minor Host; E. eragrostis 

 Beauv.) — Waste places, sparingly in- 

 troduced from Europe, Maine to Wis- 

 consin and Iowa, south to Georgia, 

 Oklahoma, and Texas; California. 



26. Eragrostis barrelieri Daveau. 

 (Fig. 211.) Annual; culms erect or de- 

 cumbent at base, 20 to 50 cm. tall, 

 branching at base, sometimes with a 

 glandular band below the nodes; 

 sheaths pilose at the summit; blades 

 flat, rather short, 2 to 4 mm. wide; 

 panicle erect, open but narrow, 8 to 

 15 cm. long, the branches ascending 

 or stiffly spreading, few-flowered, 

 spikelet-bearing nearly to base, the 



