MONOCOTYLEDONS. GRAMINE^E. FeStUCd. 169 



20. DACTYLIS. 



Glume 2-valved, many-flowered ; valves unequal, the larger one 

 keeled. Perianth 2-valved ; valves lanceolate, awnless. Ca- 

 ryopsis invested with the permanent, hardened perianth. 



1. D. glomernta, panicle crowded secund, leaves plane, p. 37. 



Way -sides, &c. 



21. ELYMUS. 



Glumes many-flowered, in pairs or ternate, lateral, the valves 

 nearly equal. Perianth firmly enveloping the car y op sis ; valves 

 lanceolate, ext. acuminate or lengthened into an awn. (F/. 

 spiked.} 



1. E. are?iaritts, spike upright dense, spikelets pubescent, flowers 

 awnless as long as the glume, leaves involute rigid, p. 46. 

 Sandy sea-shores. 



22. FESTUCA. 



Glume 2-valved, many-flowered ; valves unequal. Perianth of 2 

 valves, lanceolate, ext. one acuminate or awned at the extre- 

 mity. 



1. F. ovina, panicle subsecund subcoarctate, spikelets oblong of 

 about 4 5 flowers with short awns, culms square (upward), 

 leaves setaceous, p. 38. Dry pastures. 



2. F. duriuscula, panicle subsecund subcoarctate, spikelets ob- 

 long of about 6 flowers with short awns, stem leaves nearly 

 plane, radical ones subsetaceous. p. 38. Dry pastures 3 espe- 

 cially near the sea. 



3. F. bromoides, panicle secund racemose, flowers shorter than 

 the awn monandrous, culm above leafless, p. 39. Walls. 



4. F. Myurus, panicle secund elongate contracted, flowers shorter 

 than the awn monandrous, culm leafy in its upper part. p. 39. 

 Walls, &c. 



5. F. gigantea, panicle branched drooping towards one side, 

 spikelets lanceolate compressed, flowers shorter than the awn, 

 leaves linear-lanceolate ribbed, p. 39. Moist woods. 



(j. F. calamaria, panicle subsecund much branched spreading 

 nearly erect, spikelets oblong awnless 3 5 -flowered, leaves 

 linear-lanceolate, p. 40. Moist alpine woods. 



7. F . foliacea, raceme spiked distichous elongate, spikelets di- 

 stant linear many-flowered, florets cylindrical awnless. p. 40. 



Pastures. 



8. F. pratensis, panicle patent branched, spikelets linear many- 

 flowered, florets cylindrical awnless, leaves linear, root fibrous. 

 p. 40. Meadows, 



9. F. elatior, panicle patent very much branched, spikelets ova- 

 to-lanceolate many- flowered, florets cylindrical subaristate, 



