

MONOCOTYLEDONS. GRAM1NEJE. Poa. 167 



1. M. nutans, panicle nearly simple racemed secund, spikelets 

 drooping ovate 2-flowered. p. 30. Woods. 



2. M.uniflorayp'dmcled branched slightly drooping, spikelets erect 

 ovate with only one perfect floret, p. 31. Woods. 



3. M. ccerulea, panicle erect subcoarctate, spikelets erect ob- 

 longo-cylindrical. p. 31. Moors. 



C. Glume many -flowered. 



1C. LOLIUM. 



Glume of 1 valve, lateral, fixed. Perianth 2-valved, firmly en- 

 veloping the Caryopsis : valves lanceolate, ext. with or with- 

 out an awn inserted below the extremity. 



1 . L. perenne, spikelets much longer than the glume, florets 

 awnless linear-oblong compressed, root perennial, p. 45. 

 Waste places. 



2. L. arvense, spikelets about as long as the glume, florets el- 

 liptical with very soft short awns, root annual, p. 45. Fields. 



3. L. temulentum, spikelets shorter than the glume, florets el- 

 liptical about as long as the rigid awn, root annual, p. 45. 

 Fields. 



17. SESLERIA. 



Glume 2 3-flowered, compressed, acute, somewhat awned. Pe- 

 rianth variously toothed or awned. Caryopsis free, but co- 

 vered with the perianth. 



1. S. ccerulea, panicle spiked ovate bracteated, spikelets 23- 

 flowered, ext. valve of the perianth aristate and toothed, p.31. 

 Mountains. 



18. POA. 



G/?/7we2-valved, many-flowered ; valves of the perianth, subovate, 

 somewhat acute, awnless. Caryopsis free, covered with the 

 perianth. 



1. P. aquatica, panicle erect very much branched, spikelets li- 

 near of obout 6 obtuse florets which have 7 ribs. p. 32. 

 Ditches, &c. 



2. P.jftuitanSy panicle nearly erect slightly branched, spikelets 

 linear appressed of from 7 1 1 obtuse florets which have 7 

 ribs with short intermediate ribs at the base, root creeping, 

 p. 32. Ditches. 



3. P. maritima, panicle erect subcoarctate (rigid), spikelets li- 

 near of about 5 obtuse flowers which are obsoletely 5 -nerved, 

 leaves convolute, root creeping, p. 33. Sea-coast. 



4. P. distant, panicle divaricate, branches at length deflexed, 

 spikelets linear of about 5 obtuse flowers which are obsoletely 

 5-nerved, leaves plane, root fibrous, p. 33. Pastures near 

 the coast. 



