34 tRIAND. DIGYN. 



almost entirely ribless, linear-oblong, rather distant, smooth, 

 bluntish. 



7. P. compressa {creeping Meadow-grass) , panicle subsecund 

 spreading (afterwards subcoarctate), spikelets oblongo-ovate 

 of from 5 — 7 obtuse flowers connected by a wcl), culm com- 

 pressed, root creeping. 



Hab. Walls, Melrose Abbey, Lighlf. Walls about the King's Park, 

 Edinb., Maugh. W^alls and in dry pastures about Glasg., very rare, 

 Hopk. Common about Edinb., Mr. Arnott. Fl. July, Aug. 1/ . 



One foot or more high, subglaucous. Culms compressed, at the base 

 procumbent. Leaves .short, linear, acute. Ligule very short, blunt. 

 Panicle not much branched. Cal. valves ribbed, acute. Valves of 

 cor. obtuse, outer one very obsoletely ribbed ; the lower florets 

 webbed at the base. 



8. P, olpina {alpine Meadow-grass), panicle diffuse, spikelets 

 ovate of 4 — 5 acute flowers hairy below (but not webbed), 

 leaves broadly linear obtuse, ligule of the upper leaves oblong 

 acute of the lower ones short obtuse. Lighlf. p. 96. E. B. 

 t.\003. 



/3. glomerata, sj)ikelets crowded. D. Don's MSS. ined. 



Hab. Common u])on elevated mountains in the Highlands. jS. Banks 

 of the Esk, G. Dun. Fl. July, Aug. 1/ . 



Six to twelve inches high, nearly erect. Leaves short, linear, obtuse 

 with a very small mucro. Spikelets rather large, close. Cal. valves 

 ovato-lanceolate, much compressed ; dorsal rib scabrous, termi- 

 nating in a very sharp point or short awn, with a short lateral rib 

 or nerve at the base. Ext. valve of cor. ovato-lanceolate, acute ; 

 dorsal rib scabrous, no lateral ones 5 lower part villous ; upper part 

 glabrous, purple ; margin diaphanous : int. valve notched or bilid 

 at the extremity. — This grass is very frequently viviparous. 



9. P. laxa {slender Meadoiv- grass), panicle contracted lax 

 slightly drooping, spikelets ovate of about 3 flowers which are 

 acute comiected by a web, leaves narrow linear-acute, ligulcs 

 all lanceolate. Willd. Sp. PL p. 3S6. E. B. t.ll23 {P.Jiex- 

 nosa). 



Hab. Ben Nevis, Mr. J. T. Mackaij. Fl. July. 1/ . 



A very slender subglaucous grass, scarcely able to support the weight 

 of its panicle, which consequently droops slightly. Leaves more 

 numerous than in A. alpina, and much narrower. Florets very ob- 

 scurely ribbed, all very acute, green and purple, vvith diaphanous 

 margins. Cal. valves nearly equal, pubescent on the keel, as is the 

 cor. which is also webbed. 



10. P. ccBsia {sea-green Meadow-grass), *' panicle spreading, 

 spikelets ovate 5-flowered, glumes lanceolate silky-edged un- 

 connected by any web, stipule {ligi/le) very short and blunt." 

 Sm. in E.B. M710. 



Hab. Scotland, Mr. Fairhurn. Ben Lawers and other Highland 

 ryountains, Mr. J. T. Mackay. Rocks of Ben Lawers and Clova j 

 mountains of Aberdeenshire, not rare, G. Don. F/. June, July. 11 • 



