88. GKAMINE^;. 195 



minutely toothed. Panicle in one or several tufts, dense, spread- 

 ing and divaricate ; rachis and branches rough ; spikelets thickly 

 clustered. Outer gl. and glumella strongly keeled, the latter ciliate 

 on the back. 



Very common. Woods and pastures. (B) P. 6 7. 



21. PHRAGMfTES. Common Reed. 



P. COMMUNIS, Trm. Rhizome long and creeping. Stem thick, 

 4 8 ft. high, round and smooth, bearing numerous, broad, linear- 

 lanceolate le. Panicle very large, when young of a chocolate 

 colour, at length light brown, from the mingling of silky hairs. 

 Spikelets several-flowered. Perfect ones enveloped in long silky 

 hairs. 



Frequent. Margins of rivers and ditches. (B) P. 78. Abundant on the 

 banks of Clyde, from Eenfrew to Dumbarton ; Bute and Arran. 



22. TmdDiA. Decumbent Heath-grass. 



T. DECUMBEXS, Beauv. Stems tufted, slighty procumbent, 

 5 12 in. high. Le. narrow, rough towards the points; sheaths 

 hairy; ligule a tuft of hairs. Raceme few-flowered. Pedicels 

 smooth, erect. Spikelets large, about 4-flowered. Gl. smooth, 

 very firm, membranous at the edge. Glumellas ending in 3 teeth 

 outer one prominent. 



Frequent. On dry heaths and pastures. (B) P. 7. Dry portions of Possil 

 marsh; near Cambuslang; Cathkin hills ; from Gourock to Arran. 



23. BufzA. Quaking-grass. 



B. MEDIA, L. Common Quaking-grass. Root fibrous, tufted. 

 Stem erect, slender, 12 18 in. high. Le. short, flat, acute, 

 roughish on the inner surface; ligule truncate, short. Panicle 

 loose and spreading; branches slender, divaricate. Spikelets 

 pendulous, purplish with green or white edges, very smooth, 

 broadly ovate, with about 7 swollen florets. 



Not common. Meadows and pastures. (B) P. 6. "About the ponds, Dougal- 

 ston ; abundantly at the entrance to the Falls of Clyde ; about Airdrie," Hopk. 

 '' Barncluith," Pair. Baldernock. 



24. P6A. Meadow-grass. 



A. Spikelets linear or oblong. 



1. P. AQUATICA, L. Reed Meadow-grass. Rhizome creeping. 

 Stems slightly compressed, thick, 4 8 ft. high. Le. broad, 

 linear, rough on the edges and keel. Panicle large, much 

 branched and spreading, often 12 in. long, branches rough 



