FESTUCE^. 487 



Colorado, Cassidy; Montana, Anderson 1611; Arizona, Tourney; 

 Texas, Nealley; Mexico, Palmer 40^. 



Introduced from Europe, and very generally distributed over 

 this continent. 



20. E. pilosa (L.) Beauv. Agrost. 71 (1812). Poa pilosa L. 

 Sp. PI. 68 (1753). Poa Caroliniana Spreug. Mant. Fl. Hal. 33 

 (1807). Poa pilosa Muhl. Gram. 141 (1817). Eragrostis Purshii 

 Hort. Schrad. Linnasa, 12:451 (1838). PJ. Caroliniana (ST^reng.) 

 Scribn. Mem. Torr. Club, 5: 49 (1895). 



A tufted erect or ascending annual, 30-50 cm. high. Ligule a 

 bearded riug; blades soft, smooth below, flat or becoming involute, 

 the tips often filiform, 10-15 cm. long, 2-3 mm. wide. Panicle 

 narrow at first, spreading when in fruit, 15-30 cm. long, rays nu- 

 merous, branching, some of the lower slightly bearded in the axils. 

 Spikelets on pedicels usually 4-8 mm. long, narrowly linear, pur- 

 plish or dark lead-color, becoming pale with age, loosely 6-20- 

 flowered, 4-8 mm. long, rachilla scarcely articulate ; empty glumes 

 thin, first 0.8-1.2 mm. long, second 1-nerved and 1.2-1.7 mm. long; 

 floral glume broadly ovate, obtuse or emarginate or abruptly acute 

 when spread, lateral nerves obscure, 1.5-1.8 mm. long; paleacurved 

 inwards, slightly ciliate on the keels, 1.3-1.6 mm. long. Grain 

 ovoid-oblong, slightly compressed, 1-1.2 mm. long. I have reluc- 

 tantly abandoned the separation of tliis from PJ. Purshii Schrad. I 

 had thought in PJ. pilosa the panicle was narrower, spikelets nar- 

 rower and acute, pedicels longer, lateral nerves more obscure, the 

 floral glume obtuse or emarginate. I have spent mucli time exam- 

 ining every specimen marked E. pilosa in the herbarium of Harvard 

 University. In every one so named the floral glume is 3-nerved. 



Texas, Nealley; New Mexico, Jones; California, Parish Brothers 

 1601; Lower California, Palmer, Orcutt; Mexico, P r ingle ^^, 49. 



Sandy or sterile 02)en jjlaces, New England to Arizona and Mex- 

 ico; also in Europe, Australia and elsewhere. 



21. E. curtipedicellata Buckl. Proc. Acad. Phila. 97 (1862). 

 Perennial; erect or decumbent at the base, 60-90 cm. high. 



Sheaths smooth, ciliate at tlie throat; blades flat or involute, smooth 

 or nearly so, 10-15 cm. long, 3-8 mm. wide. Panicle diffuse, ovate. 



