Jones: Flora of Illinois, 22. Gramineae 61 



45. Dactyloctenium Willd. 

 D. aegypticum (L.) Riclit. Crowfoot Grass. Waste ground and fields, not 

 common; nat. from the Old World tropics. 



46. Cynodon Rich. 



(Capriola Adans.) 

 C. dactylon (L.) Pers. Bermuda Grass. Fields, roadsides, and waste places; 

 nat. from Eur. July-Aug. 



47. Leptochloa Beauv. — Sprangie-top Grass 

 1. Sheaths pubescent; spikelets 1.5-2 mm. long; sandy soil, s. 111. Aug.-Sept. 



L. filijormis (Lam.) Beauv. 



1. Sheaths glabrous; spikelets 6-10 mm. long; wet meadows and along ditches, 



s. Ill L. fascicularis (Lam.) Gray 



48. Schedonnardus Steud. 

 S. paniculatus (Nutt.) Trel. Hancock Co., Mead in 1845; probably now 

 extinct in 111. "It was found on the original prairie, especially around salt 

 licks." — Mosher. 



49. Beckmannia Host — Slough Grass 



B. syzigachne (Steud.) Fern. Wet ground, rare; n.e. 111. "Clyde, III., fre- 

 quent, Umbach; the only station of this interesting grass." — Pepoon. [B. 

 erucaeformis sensu auth., non Host]. 



50. Spartina Schreb. — Cord Grass 



S. pectinata Link. Along ditches, moist ground along roads, in marshes, 

 etc. July-Sept. \_S. michauxiana Hitchc.} 



51. Chloris Sw. 



C. verticiUata Nutt. Windmill Grass. Sandy soil, or along roads, occa- 

 sional; adv. from w. of the Mississippi R. June-July. 



52. BouTELOUA Lag. — Grama Grass 



1. 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. hirsiita Lag. 



2. Rachis not projecting; keel of second glume g'abrous or with few hairs, 



these without papillose bases. Jo Daviess Co., Pepoon 173 



B. gracilis (HBK.) Lag. 



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

 n. half of 111. July-Sept B. curtipendula (Michx.) Torr. 



53. HiEROCHLOE R. Br. 

 {Savaslana Schrank; Torresia Ruiz & Pav.) 

 H. odorata (L.) Beauv. Sweet Grass. Moist meadows, fields, and road- 

 sides, n.e. III. May-June. 



