GROUP 11 



la. Blade blue-green (glaucous) above and below 2 



1 b. Blade not blue-green 3 



2a. Sheath long hairy 



149. Paspalum floridanum — Florida Paspalum 



Leaves rolled in bud-shoot; sheath distinctly flattened, long hairy, split 

 with overlapping margins hairy; auricles absent; collar narrow, hairy at 

 least on margins; ligule membranous, 2 to 3 mm. long, truncate to round- 

 ed; blade to 20 mm. wide, glaucous, long hairy above and below, mar- 

 gins rough and mostly long hairy. Inflorescence — 2 to 5 one-sided spike- 

 like branches with flat, round to oval seed. Coastal Plain, Delaware 

 south. Low moist sandy soil. 



2b. Sheath smooth or with a few hairs at top 



150. Paspalum floridanum var. glabra turn — Smooth Florida Paspalum 



Leaves rolled in bud-shoot; sheath distinctly flattened, mostly smooth 

 but may be sparsely hairy near top, split with overlapping margins at 

 times hairy; auricles absent; collar narrow to medium broad, mostly 

 hairy on margins; ligule membranous, 1 to 2 mm. long but sometimes to 

 about 3 mm., rounded; blade 10 to 22 mm. wide, glaucous, smooth above 

 and may be long hairy near base, smooth and keeled below, margins 

 smooth to rough and sometimes sparsely long hairy. Inflorescence — 2 to 

 5 one-sided, spike-like branches with flat, round to oval seed. New Jersey 

 south. Brackish marshes and low sandy ground. 



3a. Blade hairy above and below 4 



3b. Blade not hairy on both surfaces 5 



4a. Plant dense velvety hairy 



151. Holcus lanatus — Velvet Grass 



Leaves rolled in bud-shoot ; sheath distinctly flattened, dense velvety 

 short hairy, split with overlapping margins hairy; auricles absent; collar 

 medium broad, divided, hairy; ligule membranous, to 3 mm. long, 

 rounded; blade 5 to 10 mm. wide, dense velvety short hairy above and 

 below, keeled below, margins short hairy. Inflorescence — A long, con- 

 tracted, pale, purple-tinged panicle. Throughout. Open ground, mead- 

 ows and moist places. 



• 45 



