7a. Blade 4 to 6 inches long 



238. Alopecurus pratensis — Meadow Foxtail 



Leaves rolled in bud-shoot; sheath round, smooth, split with overlap- 

 ping hyaline margins; auricles, absent; collar medium broad, mostly 

 divided ; ligule membranous, 1 to 3 mm. long, truncate to rounded, may 

 be toothed and ciliate ; blade 5 to 9 mm. wide, rough above, smooth to 

 slightly rough below, margins rough and hyaline. Inflorescence — soft, 

 dense, cylindrical, spike-like. South to Delaware. Fields and waste 

 places. 



7b. Blade to 20 inches long 8 





■ ■'.'•■■■, i- v'i 



.-*-.• W-7*.-- *:•■:*■•■'■ 



8a. Stems below ground with a series of bulbs 



239. Arrhenatherum elatius var. bulbosum — Bulbous Oatgrass 



Leaves rolled in bud-shoot; sheath round, smooth or sometimes short 

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

 narrow to broad, divided; ligule membranous, to 1.4 mm. long, truncate, 

 may be very short ciliate; blade to 10 mm. wide rough and sometimes 

 sparsely short hairy above, smooth below at least near base, margins 

 rough. Inflorescence — a narrow, pale or purplish, shining panicle. Dela- 

 ware, West Virginia south. Occasionally a weed in fields. 



8b. Stems below ground without a series of bulbs 



240. Arrhenatherum elatius — Tall Oatgrass 



Leaves rolled in bud-shoot ; sheath round, smooth, split with overlap- 

 ping hyaline margins; auricles absent; collar narrow to broad, may be 

 divided; ligule membranous, to 2.5 mm. long, truncate to rounded, may 

 be toothed and ciliate; blade 5 to 10 mm. wide, smooth to rough or some- 

 times short hairy above, smooth to rough below, margins rough and 

 hyaline. Inflorescence — a narrow, pale or purplish, shining panicle. 

 Throughout. Meadows, open ground and waste places. 



GROUP 20 



la. Ligule .6 mm. or less long 2 



1 b. Ligule 1 mm. or more long 3 



2a. Blade not more than 1 1 mm. wide 



241. Eragrostis spectabilis — Purple Lovegrass 



Leaves rolled in bud-shoot; sheath round, hairy at least at throat, split 

 with overlapping hyaline margins; auricles absent; collar broad, may 

 be divided; ligule membranous, to .2 mm. long; blade to 11 mm. wide, 

 long hairy near base above, smooth below, margins rough and hyaline. 

 Inflorescence — a diffuse, bright purple panicle two-thirds entire height 

 of plant. Throughout. Sandy soil. 



