82 LEAF-STRUCTURE [CcH. V 
girders: small patches of sclerenchyma at the apex 
of each stronger ridge, and on the opposite side below 
only. No hairs. 
Lolium temulentum is similar but is more apt to be convolute, 
whereas LZ. perenne is more folded. 
Alopecurus pratensis. Leaf thin and somewhat lke 
Phleum, but the ridges somewhat higher and more 
rounded, and only the principal bundles girdered below. 
Stomata on both faces. 
Festuca elatior, Bromus giganteus and most species of Agrostis 
come near Lolium. See Figs. 17, 22. 
