482 POACE.E. 



nunieroua, ln-iuiching, capilliiry. stilT, mostly naked in tlie axils. 

 Spikc'lets mostly single on long jtodioels, 1-4 cm. long, oval, grirn- 

 isli or tinged with purjjle, scanrely ilattened, 2-4-llo\vered, a.")-:).') 

 mm. long; empty glnmos snheqnal, acnte. l-nervcd, 1-1,,'} mm. 

 long; lloral glnme ovate, obtnse when spread, obscnrely 3-nerved, 

 1.5 mm. long; i)alea inonrved, 3-toothed, ciliate (m the keels. 



Massachnsetts, Coohnj; District of Columbia, MrCarthy; Ten- 

 nessee, (htlliiKjer; Florida, Cnrti.ss 3409. 



New England to Texas. 



10. E. EitACiHOSTis (L.) Karst. Dentsch. Fl. 380 (1880-S3). 

 Poa Envjrosfis L. Sp. PI. G8 (17:)3). E. minor Host, El. Anstr. 

 1: i;]') (1827). B. pomnides lioaiiv. Agrost. 1G2 (1812). 



Annual; culms varionsly spreading or erect, 10-25 cm. high. 

 IMades Hat, smooth. 1-15 cm. long, 1-2.5 mm. wide, themargijis and 

 glumes containing more or less glands secreting an oll'ensive snb- 

 stance. Panicle ovoid or linear, rather dense, 5-15 cm. long. 

 Spikelots ilat on short pedicels, oblong-linear, lead-colored, 8-20- 

 tloAvered, 4-10 nun. long; floral glnme broadly oval and obtuse 

 when sin-ead, 1.5 mm. long, lateral nerves prominent, keel nsnally 

 smooth, sometimes glandular; palea oval, ciliate on the nerves. 

 CJrain globular-oval or ovoid, O.G mm. long. 



Sandy waste places, eastward, perhaps elsewhere. Introduced 

 from Europe. 



^lexico, Srliaffiwr 1027. 



11. E. interrupta (Xutt.) Trelease; Branner k Coville, Kep. 

 Geol. Surv. Ark. 1888, Part. 4, 237 (1891). Poa intevrupfa^nit. 

 Trans. Am. Phil. Soc. (IT.) 5: 140 (1837). E. oxylepis Torr. Kept. 

 Bot. Whipple Exped. 156 (185G). 



A tufted erect slender annual or perennial. 15-50 cm. high. 

 Sheaths smooth; ligulc very short, often bearded; blades rigid, be- 

 coming involute. 10-20 cm. long, 2-3 nmi. wide. Panicle race- 

 mose, capitate or spikeliko with interrupted clusters, often tinged 

 with light purple, 4-12 cm. long, 1-3 cm. diam. Spikelets on short 

 jiedicels or nearly sessile, much flattened, linear or elliptical. 15-30- 

 flowered, 10-lG nmi. long: empty glumes lanceolate, 1 -nerved, flrst 

 2mm. long, second 2.5-3 mm long; floral glume ovate-lanceolate, 



