PHRAGMITES. CALAMAGROSTIS. 489 



Tribe IX. Agrostidea. 



17. PHRAGMI'TES Adans. Reed. 



1. P. communis (Trin.) ; pan. diffuse, spikelets 1 6-flowered, 

 fl. exceeding the glumes. Arundo L., E. B. 401. P. 29. 

 St. 5 6 feet high, erect. Pan. large, purplish. Spikelets 

 usually 3 6-fl., or 1 2-fl . in P. nigricans Dum. L. flat, broad. 

 Soboliferous ; soboles rarely aerial and 20 40 ft. long (Phytol. 

 t. 146). Marshes. P. VIII. E. S. I. 



18. AMMOPH'ILA Host. (Psamma Beauv. ed. viii.) 

 Marram. Bent. 



1. A. arundindcea (Host) ; pan. cylindrical rather thicker at 

 the middle, gl. and pales linear-lanceolate acute, hairs 5 the 

 length of the pale. P. arenaria (R. & S.) ed. viii. Arundo L., 

 E. B. 520. P. 8. St. erect, stiff, 23 feet high. L. rigid, in- 

 volute, acute, glaucous. Panicle straw-coloured. Sandy sea- 

 shore, binding the shifting sands. P. VII. E. S. I. 



2. A. bal'tica (Link) ; pan. lanceolate, gl. and pales lanceo- 

 late-prolonged very acute, hairs \ the length of the pale. J. of 

 B. x. t. 127. Known by its more lax sublanceolate pan. and 

 very ac ate glumes. Ross Links, Northumb. Norfolk. P. VII. 



JtL. 



19. CALAMAGROS'TTS Adans. Small Reed. 



* With no superior rudimentary Jloiver. 

 CALAMAGROSTIS Beauv. 



1. C. lanceoldta (Roth) ; pan. loose erect, awn very short 

 from the bottom of the notch at the end of the lower pale and 

 scarcely extending beyond it, hairs longer than the pales. 

 P. 84. Arundo Calamagrostis L., E. B. 2159. St. slender, 

 34 feet high. Wet places, rare. P. VII. E. S. 



2. C. epige'jos (Roth) ; pan. rather close lobed, straight awn 

 from about the middle of the lower pale, hairs longer than the 

 pales. E. B. 403. P. 16. St. 35 feet high. Damp shady 

 places. P. VII. E. S. L 



** With a superior rudimentary Jlower. DEYEUXIA Beauv. 



3. C. neglec'ta (Gaert. M. & S.) ; pan. close, gl. lanceolate 

 'rough on the keel one (at least) 3-ribbed, lower pale nearly as 

 long as the upper gl. deeply notched at the top longer than the 

 hairs, straight awn from below the middle of the pale and 

 scarcely extending beyond it ; 1. of the barren shoots slender. 



Yd 



