478 POACE.E. 



Poa hypnoidcs Lam. Tabl. Encycl. 1: 185 (1701). Poa rcptmis 

 Michx. Fl. Bor. Am. 1 : 09 (1803). Bragrosfis . eptans JS'ees, 

 Agrost. Bras. 514 (1829). 



Prostrate aud creeping annuals, culms mucli-branched, 5-30 cm. 

 long, ligule a ciliate ring; blades Hat or involute, 1-5 cm. long, 1-3 

 mm. wide. Panicle ovoid or pyramidal, 3-G em. long, or capitate. 

 Spikelets Hat, elliptical, ovate or linear, im])erfeetly dia'cious, almost 

 sessile or even capitate, 10-40-Howered. 5-14-22 mm. long; empty 

 glumes acute, 0.5-1 mm. long; lloral glume broadly ovate, acute, 

 1.8-2.2 mm. long, with lateral nerves obscure or })rominent; palea 

 shorter than its glume, ciliate on the keels. Grain oval, com- 

 pressed, 0.7-0.8 mm. long. 



r. .S'. IJepf. Agncnl. 591; Illinois, Ctmhij in 18G8; Florida, 

 Chtipnmn: Texas, Palmer \?>^^, Nealley; Oregon, JIaU G31; Cali- 

 fornia, Pnmjle in 1882. 



\'ery variable in size, mode of growth, and arrangement of 

 spikelets. 



In some the geniculate stems are 00 or more cm. long, with in- 

 ternodes 10 em. long. In No. 431, T. J. Howell. Oregon, the 

 si)ikelets are in very large numbers (hundreds) in a tuft 8-10 cm. 

 diam. 



Wet places, New England to Oregon and Texas. 



2. E. Vahlii (R. cS: S.) Nees, Agrost. Bras. 2: 490 (1829). Poa 

 VahUi R. & S. Syst. 2: 5G3 (1817). E. anmna Presl, Rel. lla?nk. 

 1: 275 (1830). Megastachya amwna Fouru. ilenisl. Biol. Centr. 

 Am. Bot. 3:572 (1880). 



An erect or ascending annual, 5-30 cm. high. Culms simple, 

 branching below. Sheaths slightly compressed, striate, pilose at 

 the throat; blades flat, attenuate-acuminate, smooth above, usually 

 pilose. Panicle 3-10-15 cm. long, spikelike or with rays more or 

 less remote and spreading, bearing spikelets to the base. Spikelets 

 nearly sessile, crowded, erect or spreading, 5-25 mm. long, linear 

 or linear-obloug, much compressed, 10-50-flo\vered ; empty glumes 

 lanceolate, subequal, about 2.5 mm. long, scabrous on the keel; 

 floral glume 2.3-2.7 mm. long, ovate, acuminate, nerves distinct, 

 keel scabrous above; palea incurved, a third shorter than its glume, 



