344 American Midland Naturalist Monograph No. 7 



56. Beckmannia Host — Slough Grass 



B. syzigachne (Steud.) Fern. Wet ground, rare; Cook Co., L. M. 

 Umhach; Lake Co., R. A. Evers in 1957. 



57. Spartina Schreb. — Cord Grass 



S. pectinate Link. Along ditches, moist ground along roads, in 

 marshes, etc.; formerly more abundant. July-Oct. [S. michauxiana 

 Hitchc] 



58. Chloris Sw. — Windmill Grass 



C. verticillata Nutt. Sandy soil, or along roads, occasional ; adv. 

 from w. of the Mississippi R. June-July. 



59. Bouteloua Lag. — Grama Grass 



L Spikes 1-4, usually curved, of 25 or more densely crowded 

 spikelets. 

 2. Rachis of spike projecting beyond the uppermost spikelet in a 

 prominent point; keel of the second glume papillose-hispid; 



prairie soil, w. and n.w. 111. July-Sept B. hirsuta Lag. 



2. Rachis not projecting; keel of second glume glabrous or with 

 few hairs, these without papillose bases; }o Daviess Co., 



H. S. Pepoon 173, in 1908 B. gracilis (HBK.) Lag. 



1. Spikes numerous (12 or more), each with 4-12 spikelets; prairie 

 soil, local; chiefly in the n. half of 111., extending southward to 

 Kankakee, Woodford, and Menard counties, and along the 



Mississippi R. to s. 111. Jidy-Sept. Side-oats Grama 



- B. curtipindula (Michx. ) Torr. 



Tribe 7. Phalarideae. — Canary Grass Tribe 



60. Hierochloe J. G. Gmel. — Sweet Grass 



H. odorata (L. ) Beauv. Moist meadows, fields, and roadsides in 

 the n. counties. May-June. 



61. Anthoxanthum L. — Sweet Vernal Grass 



A. odoratum L. Meadows, roadsides, waste places; nat. from 

 Eurasia; Cook and Lake counties. May-July. 



62. Phaiaris L. — Canary Grass 



1. Panicle 8-15 cm long; spikelets 5-6 mm long, the glumes not 

 winged; marshes and wet meadows. May-July. Reed Canary 

 Grass P. arundinacea L. 



1. Panicle ovoid, 1-4 cm long; spikelets 6-8 mm long, the glumes 

 winged; roadsides and waste places; nat. from Eur. June-July. 

 Canary Grass P. canariensis L. 



