346 GLUM ACE.fc 



io. B. commutatus (Meadow-Brome). Differs from B. racemosus 

 in having more or less drooping instead of erect panicle and spikelcts, 

 and the flowering glumes are uniformly rounded at the side instead 

 of being bluntly angled about the middle. Roadsides, cultivated 

 ground, and dry pastures ; common. Fl. June, July. Biennial. 



11. B. mollis (Soft Brome, Lop-Grass). Very variable, some- 

 times only a few inches high, sometimes 2 feet or more, the whole 

 plant softly hairy ; panicle more erect than in the allied species, 

 i-6 inches long. It differs from the 2 preceding by having the 

 sides of the fit umes strongly angled. Roadsides and waste 

 places ; common. Fl. May to July. Annual. 



12. B. intcrruptus is a recently described species which has 

 hitherto been regarded as a variety of B. mollis ; it is remarkable 

 for its narrow, compact, interrupted panicle, the branches being 

 very short and stiff. Fields in some of the south-eastern counties ; 

 rare. Fl. May, June. Annual, biennial, or perennial. 



13. B. arvensis (Field-Brome). Slender, 1-3 feet high, softly 

 hairy ; panicle spreading, up to 8 inches long, with very slender, 

 finally horizontal branches ; spikelcts linear-lanceolate, green or 

 somewhat violet, about inch long with the awns, which are about 

 \ inch long ; flowering glume 7-ribbed. Naturalised in many 

 places. Fl. July, August. Annual. 



41. Brachypodium (False Brome) 



1. B. sylvaiicum (Slender False Brome). Slender, erect, 2-3 feel 

 high ; rooistock slightly creeping ; leaves tufted, flat, rather long; 

 spikelets usually 6 or 7, 1 inch long or more, more or less drooping, 

 8-12-flowered or more, arranged in a loose spike; outer glumes 

 pointed ; flowering glumes with an awn as long as or longer than 

 themselves. Woods and hedges ; common. Fl. July. Perennial. 

 (PI. xcvi.) 



2. B. pinnalum (Heath False Brome). Rootslock more creeping 

 than in the last ; the spikelcts are more erect, and the awns are 

 scarcely as long as the flowering glumes. Pastures and stony, 

 waste places on dry limestone soil ; rather uncommon ; absent 

 from Scotland. Fl. July. Perennial. 



42. AGROPYRON (Couch-Grass) 



1. A. caninum (Bearded or Wood Couch-Grass). Distinguished 

 from A. re pens by the absence of a creeping rooistock ; the plant 

 is more leafy and not so glaucous ; flowering glumes prominently 

 5-ribbed, ending in a rather long awn ; outer glumes usually smaller, 

 with shorter awns and often only 3 ribs. Woods and shady places ; 

 not common. Fl. June, July. Perennial. 



