IX] "SEEDS" 171 



H-H- ^-^ Palea seven-ribbed, smooth. 



Brachypodium pinnatum. 



Brachypodium pinnatum, L., is similar, but the palea 



more open and boat-like and narrows more suddenly 



above into the smooth awn which is shorter than itself 



(Fig. 77). Length 8 — 9 mm. The caryopsis is, however, 



much more slender than in Agropyrum. 



For distinction from B. sylvaticum, see above. The inner palea 

 is ciliate and more delicate than in Agropyrum. 



= = Paleje rolled round the " seed " which is terete 

 and tapering gradually into a stiflf awn. 



A Awn longer than the palea. 



Festuca Myurus. 

 See also Festuca ovina, Cynosurus, &c., p. 147, and Arundo. 



Festuca Myurus, L. (Fig. 80). 



"Seed" 5 — 7mm. without the long (10mm.) awn, 

 tapering and slender (like Nardus), grey or brown. Finely 

 mamillate upwards. Rachilla small. 



A A Awn shorter than palea. 



Festuca ovina (var. rubra). 



Nardus stricta. 



Aira flexuosa, Molinia and other moor-grasses occur with these 

 narrow-leafed Fescues, but are easily distinguished : Molinia by 

 having no awn and being shorter and stouter, and Aira flexuosa by 

 the dorsal awn and basal hairs. 



Festuca rubra, L. (Fig. 78). 



" Seed " pale brown with rosy tinge, 3 — 5 mm. long 

 without the awn, smooth, or slightly hairy upwards. 

 Caryopsis 2 — 3o mm., compressed, with a shallow broad 



