Koeleria 



Aveneae 



121 



50 



Map 194 



Koeleria cristata (L.) Pers. 



o 50 



Map 195 



Sphenopholis nitida (Spreng.) Scribn. 



50 



Map 196 



Sphenopholis intermedia (Rydb.) Rydb. 



2. Lolium multiflorum Lam. Italian Ryegrass. Map 193. This rye- 

 grass has been found in several counties in the state in lawns, parks, and 

 golf grounds and may be considered established. 



Nat. of Eu. ; common on the Pacific coast, infrequent eastward. 



4. AVENEAE Nees. Oat Tribe 



Spikelets not over 5 mm long. 



Spikelets disarticulating above the glumes. 



Inflorescence spikelike; plants of a dry, sandy habitat 52. Koeleria, p. 121. 



Inflorescence a widely spreading panicle; plants of a springy habitat 



55. Deschampsia, p. 123. 



Spikelets disarticulating below the glumes. 



Florets all perfect, awnless 53. Sphenopholis, p. 121. 



Florets unlike, the lower perfect, awnless, the upper staminate and bearing a 



hooked awn 59. Holcus, p. 124. 



Spikelets more than 5 mm long. 

 Lemmas awned from the back. 



Annual; spikelets more than 10 mm long 57. Avena, p. 123. 



Perennial; spikelets less than 10 mm long 58. Arrhenatherum, p. 123. 



Lemmas awned from between the two apical teeth 60. Danthonia, p. 124. 



52-346. KOELERIA Pers. 



1. Koeleria cristata (L.) Pers. Junegrass. Map 194. Infrequent to 

 local in the northwestern counties where it grows in dry sand on dunes and 

 sand hills, rarely on gravelly hills. The species is variable. The inflores- 

 ence expands in anthesis, and becomes spikelike afterward. 



Ont. to B. C, southw. to Del., Mo., La., Calif., and Mex. 



53-344. SPHENOPHOLIS Scribn. Wedgegrass 



Sheaths and blades softly pubescent, sometimes only the sheaths pubescent. 



First glume fully a third as wide as the second; glumes subequal; lemmas more or 

 less scabrous all over (at least the exposed apical end scabrous) ; anthers mostly 

 0.8-1.2 mm long; spikelets 3-4 mm long 1. S. nitida. 



