ARUNDO.— OALAMAGROSTIS. 
489 
Tribe IX. Agrostidece. 
17. Aeundo L. ein. Beauv. Reed. 
1. A. Phragmites (L.) ; pan. diffuse, spikelets 1 — 6-flowered, 
fl. exceeding the glumes. — E. B. — 401. P. 29. Phragmites 
communis (Trin.). — St. 5—6 feet high, erect. Pan. large, 
purplish. Spikelets usually 3 — 6-fl., or 1 — 2-fl. in A. nigricans 
(Merat). L. flat, broad. Soboliferous ; soboles rarely aerial 
and 20—40 ft. long {Phytol. t. 146).— Marshes. P. VIII. 
E. S. t. 
18. Psam'ma Beauv. Marram. Bent. 
1. P. arenana (E. & S.) ; pan. cylindrical rather thicker at 
the middle, gl. and pales linear-lanceolate acute, hairs A the 
length of the pale. — Arundo L., E. B. 520. P. 8. — St. erect, 
stiff, 2 — 3 feet high. L. rigid, involute, acute, glaucous. 
Panicle straw-coloured. — Sandy seashore, binding the shifting 
sands. P. VII. E. S. I. 
2. P. hal'tico. (E. k, S.) ; pan. lanceolate, gl. and pales lanceo- 
late-prolonged very acute, hairs i the length of the pale. — J. of 
B. X. t. 127. — Known by its more lax sublanceolate pan. and 
very acute glumes. — Eoss Links, Northumb. Norfolk. P. 
VII. E. 
19. Calamagkos'tis Both emend. Small Reed. 
* With no superior rudimentary floiver. 
Calamageostis Eoth em. Beauv. 
1. C. canes' cens (Gmel. em. Druce) ; 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. C. lanceolata (Eoth), Arundo Calaniagrostis L., 
E. B. 2159. — St. slender, 3—4 feet high.— Wet places, rare. 
P. vn. 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.— ^. B. 403. P. 16.— St. 3—5 feet high.— Damp shady 
places. P. VII. E. S. I. 
** With a superior r^idimentary flower. Deyeuxia Beauv. 
3. C. stric'ta (Koeler) ; 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, 
