

MONOCOTYLEDONS. GRAMINE.'E. Avcna. \7\ 



subcompressed glabrous, florets imbricated depressed, awns 

 straight about as long as the glume, leaves slightly hairy. 

 p. 41. Fields. 



6. Br. squarrosus, panicle drooping, peduncles simple, spikelets 

 ovato-lanceolate subcompressed, florets nearly glabrous imbri- 

 cated depressed, awn divaricating, leaves pubescent, p. 42. 

 Fields ? 



7. Br. arvensis, panicle spreading (at length drooping) pedun- 

 cles branched, spikelets lanceolate compressed, florets imbri- 

 cated depressed glabrous about as long as the straight awn, 

 leaves hairy, p. 42. Fields. 



8. Br. erectus, panicle erect, spikelets linear-lanceolate com- 

 pressed, florets subcylindrical remote glabrous longer than the 

 straight awn, radical leaves very narrow ciliated, p. 42. 

 Pastures. 



9. Br. asper, panicle branched drooping, spikelets linear-lanceo- 

 late compressed, florets remote subcylindrical hairy longer than 

 the straight awn, leaves uniform the lower ones hairy, p. 42. 

 Woods. 



10. Br. sterilis, panicle drooping slightly branched, spikelets 

 linear-lanceolate, florets remote subcylindrical scabrous shorter 

 than the straight awn, leaves pubescent, p. 43. Hedges. 



l\. Br. diandrus, panicle erect slightly branched, spikelets li- 

 near-lanceolate, florets remote subcylindrical subscabrous about 

 as long as the straight awn, stam. 2 (sometimes 3, Schrad.), 

 leaves subglabrous. p. 43. Hedges. 



25. AVENA. 



Glume 2-valved, many-flowered. Perianth bivalved ; valves lan- 

 ceolate, firmly inclosing the car y op sis ; ext. one beariu 

 twisted awn on its back. 



1. A. fatua, panicle erect, spikelets drooping of about 3 flowers, 

 florets smaller than the glume hairy below, root fibrous (annual). 

 p. VS. Fields. 



2. A. puf'escens, panicle erect nearly simple, spikelets of about 

 3 flowers which are longer than the glume, their pedicels \il- 

 lous, leaves plane downy, edges smooth, p. 43. Hilly pas- 

 tures. 



3. A. planiculmis, panicle erect slightly branched (subspicate), 

 spikelets of about 5 flowers which are much longer than the 

 glume, margins of the leaves and the sheaths scabrous, culms 

 and sheaths compressed, p. 43. Alps. 



4. A. pratensisy raceme erect simple, spikelets of about 5 flowers 

 which are longer than the glume, leaves glabrous finely serra- 

 ted, lower ones involute, p. 44. Mountain pastures. 



5. A. Jlavescens, panicle much branched lax ? spikelets of about 



