394 97. GRAMINEJE. 



Stoloniferous ; stoles rarely aerial, 20 40 ft. long (Phytol. i. 

 146). Marshes. P. VIII. 



18. PSAMMA Pal. de Beauv. Marram. 



1. P. arenaria (R. and S.); pan. cylindrical thickest at the 

 middle, gl. and pales linear-lanceolate acute, lower pale 5 -ribbed, 

 hairs ^ of the length of the pales. Arundo Sm., E. B. 520. 

 Aramophila R. P. 8. St. erect, stiff, 23 feet high. L. rigid, 

 involute, acute, glaucous. Panicle straw-coloured. The name 

 of Ammophila was given to a genus of Hymenopterous insects 

 by Kirby in 1798. Sandy sea-shore, binding the shifting sands. 



19. CALAMAGROSTIS Adans. Small-reed. 



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

 from the bottom of the notch of the lower pale and scarcely 

 extending beyond it, hairs longer than the pales, no rudimentary 

 fl. P. 84. Arundo Calamagrostis E. B. 2519. St. slender, 

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



2. C. Epigejos (Roth) ; pan. rather close lobed, straight awn 

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

 pales, no rudimentary fl. E. B. 403. P. 16. St. 35 feet 

 high. Damp shady places. P. VII. 



3. C. stricta (Nutt.) ; 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, a rudimentary flower, 1. of the barren shoots slender. 

 E. B. 2160. St. erect, 23 ft. high. L. broad ; on the barren 

 shoots much narrower. Uppermost ligule short, blunt; longer and 

 acute in the Irish plant, w^hich has shorter pan. -branches. Bogs. 

 Formerly found near Forfar. Oakmere. Cheshire. Lough Neagh. 

 P. VI. VII. 



[C. lapponica (Wahl.). "In Scotia adest forma nostrse pi. 

 valde similis." Anders. 88. I cannot learn anything about this.] 



20. APERA Adans. Wind-grass. 



1. A. Spica-venti (Beauv.); pan. spreading, anth. linear- 

 oblong. Agrostis Sm., E. B. 951. Anemagrostis (Tr'm.} P. 17. 

 St. 1 2 feet high. Pan. very light and elegant ; branches 

 spreading horizontally with flowers. Awn 3 or 4 times exceed- 

 ing the pale. Rudimentary fl. pedicelliform. A tuft of hair on 

 each side of the inner pale. Sandy fields, rare. A. VI. VII. 



E. S. 



