I] 



ANNUALS AND PERENNIALS 



11 



Annuals 



which may become biennial or perennial. 

 Alopecurus genicnlatits. 

 Hordeum pratense. 

 Lolium perenne. 



L. italicum, (may be perennial). 

 Bromus asper (may be perennial). 

 B. sterilis. 

 B. arvensis {vaa,j be perennial). 



Perennials. 



Holcus lanatus. 



H. Tnollu. 



Nardil^. 



Hordeum sylvatiaurri. 



Agropyrwm. 



Bro/ahypodium. 



Bromiis erectus. 



B. giganteus. 



Featiica ovina. 



F. elatior. 



F. sylvatica. 



Dactylis. 



Cynosurus cristatus. 



Briza media. 



Milium. 



A nthoxanthum. 



Digraphis. 



Phleum pratense. 



Alopecurus pratensis. 



Agrostis alba. 



A. canina. 



Psamma. 

 Aira ccespitosa. 

 A. Jlexuosa. 

 A, caneacens. 

 Avena pratensis. 

 A. flavescens. 

 Arrkenatherum. 

 Olyceria aqiiatica. 

 G. fluitans. 

 Poa maritima. 

 P. compressa. 

 P. pratensis. 

 P. trivialis. 

 P. nemoralis. 

 P. alpina. 

 P. hidbosa. 

 Molinia. 

 Melica. 

 Triodia. 

 Koeleria. 

 Arundo. 



The rhizome of a perennial grass is continued sym- 

 podially by means of buds branching from the lowermost 

 joints of the flowering shoots, and some importance is 

 attached to the mode of spreading of these lateral sprout- 



