412 97. GRAMINE.E. 



root creeping. L. having a deciduous row of hairs on the ridges 

 as in T. repens, not keeled. Spikelets often approximate. St. 

 prostrate or ascending. Producing decumbent barren leafy shoots. 

 Sandy sea-shores, probably not rare. P. VII. VIII. E. S. 



4. T. junceum (L.) ; spikelets 4 6-flowered, gL obtuse or 

 apiculate 6 11 -ribbed, lower pale blunt, axis smooth or slightly 

 downy, rachis smooth brittle, I. involute finely and closely downy 

 above, root creeping. E. B. 814. P. 63. Spikelets distant. 

 Rachis easily separating at the knots. Producing decumbent 

 barren leafy shoots. Sandy sea-shores. P. VII. VIII. 



[T. cristatum (Schreb.) ; spikelets 4 5-flowered closely im- 

 bricated, gl. with a terminal awn, outer pale with an awn about 

 as long as itself, rachis and axis slightly downy, 1. hairy above, 

 st. rough. E. B. 2267 . " On steep banks and rocks by the sea- 

 side between Arbroath and Montrose." Mr. G. Don. P. VII.] S. 



f! 



47. ELYMUS Linn. 



1. E. arenarius(L.)', spike upright close, rachis flat not winged, 

 1. lanceolate downy not longer than the spikelets. E. B. 1672. 

 *. 64. Closely resembling Psamm,a arenaria, but readily di- 

 stinguished by its broad 1. and short ligule. St. 3 4 feet high. 

 Sandy sea-shores. P. VII. 



2. E. geniculatus (Curt.) ; spike lax, rachis winged, gl. awl- 

 shaped glabrous longer than the spikelet. E. B. 1586. P. 131. 

 St. 3 4 feet high. Spike 1 2 feet long, usually remark- 

 ably bent downwards at the second or third spikelet. In a salt 

 marsh near Gravesend. Mr. Dickson. P. VII. E. 



48. HORDEUM Linn. Barley. 



1. H. sylvaticum (Huds.) ; gl. all awlshaped not ciliate 

 rough, lateral fl. perfect, middle fl. often barren, lower pale with 

 an awn of twice its length. P. 130. Elymus europceus Linn., 

 Sm., E. B. 1317. Middle fl., if barren, with shorter gl. having 

 involute edges, thus appearing setaceous. The spikelets have a 

 second fl. occasionally. Woods and thickets on a calcareous 

 soil. P. VII. VIII. E. 



2. H. pratense (Huds.) ; gl. all setaceous not ciliate rough, 

 lateral fl. imperfect, lower pale of fertile middle fl. with an awn 

 of about its length. E. B. 409. P. 11. Spike erect. Gl. of 

 lateral fl. shorter. Damp meadows. P. VII. 



3. H. murinum (L.) ; gl. of the middle spikelet linear-lanceo- 

 late ciliate, of the lateral ones setaceous rough, lateral fl. imper- 

 fect. E. B. 1971. P. 10. Spike often slightly nodding. Awn 

 longer than the lower pale. Lateral gl. sometimes slightly 



