GR AMINES. 
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with long 1 — 2 fl. branches. Lowest fl. not longer than the 
larger glume. P. nemoralis s. montana (Koch) I believe to be a 
different plant. — Ben Lawers at an elevation of 3600 feet. Dr. 
Greville. P. VI. S. 
1 1. P. laxa (Hsenke) ; " panicle slender slightly drooping, spike- 
lets oblong-ovate of 3 fl., outer palea with 3 hairy nerves, upper 
sheath longer than its leaf which is flat and taper-pointed, upper- 
most joint generally concealed, ligule long acute." — E. B. 1123. 
Par. 38. — Root fibrous. I have not seen native specimens. — 
Ben Nevis at an elevation of more than 4000 feet. P. VII. S. 
12. P. alpina (L.) ; panicle close erect, spikelets ovate of 3 or 
4 acute fl., outer palea with 3 hairy nerves, upper sheath longer than 
its leaf which is folded and rounded behind the summit, uppermost 
joint exposed, ligule " long pointed." — E. B. 1003. Par. 37. — 
Root fibrous, tufted. St. 6 — 12 in. high. Fl. often viviparous. 
— Lofty mountains. P. V.— VII. 
13. P. annua (L.) ; panicle spreading erect with a triangular 
outline, spikeiets ovate-oblong of 5 or 6 fl., outer palea with 5 
nerves all more or less silky, upper sheath longer than its leaf, 
ligule oblong acute.— E. B. 1141. R. 1621. Par. 40, 41.— Root 
fibrous. St. ascending or procumbent. L. flaccid, often wavy, 
broad. Branches of the panicle patent or divaricated. — f3. supi- 
na ; outer palea glabrous or with very few hairs on the midrib, 
branches of the panicle erecto-patent, 1. narrow. — Very common. 
A. III.— X. 
35. Glyceria R. Br. 
1. G. aquatica (Sin.) ; panicle erect repeatedly branched spread- 
ing, " rachis semiterete," branches scabrous, spikelets linear- 
oblong of 5 — 10 fl., outer palea obtuse, 1. smooth with slightly 
compressed sheaths. — E. B. 1315. Par. 44. — Root creeping. 
St. 3 — 6 feet high, smooth, slightly compressed. Sheaths very 
long. L. long, rough on the edges and keel. Ligule short. 
Panicle large. Branches angular, slender, branched. Outer 
palea with the central nerve extending to the summit. — G. re- 
mota (Fries) having a terete rachis, smooth branches to the 
panicle, 4 — 5 -flowered spikelets, outer palea 3 -toothed, sheaths 
terete and 1. scabrous, will probably be found in Britain. — 
Watery places. P. VII. 
2. G. fluitans (R. Br.) ; panicle subsecund slightly branched 
very long, rachis semiterete, branches roughish divaricated whilst 
in flower, spikelets linear of 7 — 12 fl., outer palea apiculate, 
sheaths compressed.— E. B. 1520. R. 1615. Par. 45.— St. 
ascending, rooting below, or floating. Ligule elongate. Panicle 
remarkably elongated. Branches scarcely divided. Outer palea 
blunt with a triangular central point, middle nerve not reaching 
the top. — Stagnant water. P. VI. — IX. 
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