416 98. aEAKnns^. 



3—4 feet high. Branches of the panicle long, in distant alter- 

 nate tufts, in flower horizontal, afterwards deflexed.— Damp 

 shady woods. P. VI. E. S. I. 



Tribe IX. Agrostidae. 



17. Phbagmi'ies Trin. Eeed. 



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

 a. exceeding the glumes. — Arundo Sm., J?. J3. 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. 

 Soboliferoua ; soboles rarely aerial ajid 20 — 40 ft. long (Phytol. 

 i. 146).— Marshes. P. Vltl. B. S. I. 



18. Psam'ma Pal. de Beauv. Marram. Bent. 



1. P. arendria (R. & S.) ; pan. cylindrical rather thicker at 

 the middle, gl, and pales linear-lauceolate acute, lower pale 5- 

 ribbed, hairs 3 the length of the pale. — Arundo L., JE. S. 620. 

 Ammophila (Host) P. 8. — St. erect, stifT, 2 — 3 feet high. L. 

 rigid, involute, acute, glaucous. Panicle straw-coloured. — Sandy 

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



2. P. bal'tica (R. & S.) ; pan. lanceolate, gl. and pales lanceo- 

 late-prolonged very acute, lower pale 3-ribbed, hairs 5 the length 

 of the pale. — J. of S. x. 1. 127. — Known by its more lax sublan- 

 ceolate pan. and very acute glumes. — Ross Links, Northumb. 



19. CALAMAflEos'Tis Adans. Small Eeed. 



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, no ru- 

 dimentary fl. — P. 84. — Anmdo Calamagrostis L., K B. 2159. — 

 St. slender, 3 — 4 feet high. — Wet places, rare. P. VII. E. 



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

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

 pales, no rudimentary fl. —K B. 403. P. 16.— St. 3—5 feet high. 

 — Damp shady places. P. VII. E. S. I. 



3. C. stric'ta (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 



