37 



Group IV. Cord-rooted Grasses. 



Leaf a hard bristle ; ligule conspicuous, and thick. 

 Moor Mat Grass (Nardus stricta). 



Fig. I. Base of shoot with the cord-like roots. Observe 

 the scale leaves at base ; the base of the old 

 foliage leaf horizontal ; the base of the young 

 leaf is vertical. 

 Fig. 2. Apex of blade. 



Leaf flat and taper -based ; ligule reduced to a tuft of 

 hairs. 

 Flying Bent or Molinia (Molinia ccerulea). 



Fig. 3. Tapered base of blade, and hairs representing 



the ligule. 

 Fig. 4. Acute apex of blade. 



Group V. Acute sheathed Grasses. 



Large ribless blades, tapered from about the middle to 

 the acute apex. Not shining on lower surface. 

 Rough Cocksfoot (Dactylis glomeratd). 



Fig. i. Section of shoot, shewing the flat two-edged 



sheath (magnified). 



Fig. 2. Base of blade and prominent obtuse ligule. 

 Fig. 3. Acute apex of blade. 



Fig. 4. Transverse section of blade (magnified). Ob- 

 serve the absence of ribs and the very pro- 

 minent keel. 



Comparatively small and ribless blades, the taper 

 commencing at the very base. Shining on lower 

 surface. 

 Rough-stalked Meadow Grass ( Poa trivialis). 



Fig. 5. Section of shoot, shewing the flat two-edged 



sheath (magnified). 

 Fig. 6. Acute apex of blade. 



Fig. 7. Section of blade, shewing median lines and 

 keel (magnified). After Stebler. 



Group VI. (See Part 77) 



