500 98. GRAMINFJE. 



P. i. 90. P. sudetica (Haenke) ed. viii. Rhizomatous, not 

 creeping. St. 2-edged, 2 3 feet high. Sheaths, edges, and 

 midribs of 1. rough. L. hooded and apiculate. In deep shade 

 in several places near Kelso : Birnham, Perthsh. [Berks. Warw. 

 Ayrsh. etc.] P. E. S. 



*** Creeping by long soboles. 



12. P. praterisis (L.) ; pan. diffuse, spikelets ovate of 3 or 4 

 webbed fl., lower pale ivith 5 prominent veins but only 3 hairy , 

 upper sheath much longer than its leaf, liqule prominent blunt. 

 E. B. 1073. P. 31 34. Very variable in size. St. and 

 sheaths nearly always smooth. Fl. strongly webbed. (3. P. aub- 

 ccerulea (Sm.) ; spikelets broader, 1. broad and short, upper 1. 

 compressed rounded at the end behind. E. B. 1004. y. anyusti- 

 folia (Gaud.) ; spikelets small, 1. slender long, lower 1. involute. 

 [Var. strigosa (Gaud.) has a contracted pan. and narrow involute some- 

 what glaucous 1J Common. P. VI. VII. E. S. I. 



13. P. compres'sa (L.) ; pan. erect or slightly unilateral 

 spreading when in flower otherwise close, spikelets ovate or 

 oblong-ovate of 5 7 blunt slightly webbed fl., lower pale 3- 

 veined, veins hairy, upper sheath about as long as its leaf, upper- 

 most knot at about the middle of the stem, liqule short truncate. 

 E. E. 365. P. 37 & 90.$. decumbent' at the base, then 

 erect, very much compressed, 1 1J ft. high. /3. P. polynoda 

 (Parn.) ; fl. free, pales with 2 faint interm. veins, uppermost 

 knot higher, ligule rather more prominent. [P. subcompressa 

 (Parn.) is intermediate betw. this and the type, having webbed fl. and 5- 

 veined pales.] P. 91 92. Dry situations. P. VII. E. S. I. 



36. GLYCE'RIA E. Br. 



1. G. aquaVica (Wahlb.) ; pan. erect much branched spread*-* 

 ing, branches rough, spikelets oblong of 5 10 fl., lower pale 

 blunt, 1. smooth with terete sheaths. .E. B. 1315. P. 44. G. 

 spectabilis M. & K. Creeping. St. 36 ft. high, smooth 

 slightly compressed. Sheaths very long. ^ L. long, rough 

 on the edges and keel, never floating. Ligule short. Pan. 

 large ; branches angular, slender, branched. Watery places. 

 P. VII. E. S. I. 



2. G. fluitans (R Br.) ; pan. secund slightly branched very 

 long, branches nearly simple roughish, spikelets linear of 712 

 adpressed lanceolate-oblong acute fl., lotver pale nearly thrice as 

 long as broad, sheaths compressed. E. B. 2975. P. 95. St. 

 ascending, rooting below, or floating. Sheaths nearly smooth, 



