ALOPKCURUS. 391 



acuminate, keel ciliate throughout. — E. B. 2265. P. 7.— St. 

 with sterile leafy shoots.^On the rocky parts of the Clova 

 mountains. Mr. G. Don. P. VII. VIII.] S. 



4. P. arenarium (L.) ; pan. oblong somewhat narrowed below, 

 gl. lanceolate acuminate, keel ciUate above, rudimentary fl. sub- 

 ulate minute.— jB. B. 222. St. 29. 1. P. 7.— St. varying greatly 

 in height. Sheaths inflated. Lower pale notched at the summit, 

 i the length of the glumes. " Stigma very short." — Sandy 

 places near the sea. A. VI. 



6. P. pratense (L.) ; pan. cylindrical, gl. oblong truncate with 

 an awn of less than half their length, keel ciliate above, no 

 rudimentary flower.— E. B. 1076. P. 77 and 78.— Root slightly 

 creeping, in dry places rather tuberous (P. nodosum L.). Pan. 

 1 — 5 in. long. Awns sometimes longer. Lower pale jagged at 

 the summit. — Meadows and pastures. P. VI. Timothy-grass. 



6. P. alpinum (L.); pan. oblong, gl. truncate glabrous ciliate 

 on the back with a scabrous awn of nearly their length, keel 

 ciliate, upper sheath inflated. — E. B. 619. P. 6. — Root some- 

 what creeping. St. 6 — 12 in. high. Our plant is the P. com- 

 mutatum (Gaud.) and dififers from the true P. alpinum by its 

 shorter panicle, not ciUate awn, much inflated upper sheath 

 and short blunt upper ligule. — Wet alpine moors at an elevation 

 of 2600—3500 feet. P. VII. S. 



11. Alopecurtjs iirew. Fox-tail- grass. 



1. A.pratensis{\j.); st. erect smooth, ^a». cylindrical ohtuse, 

 gl. acute connected belovv ciliate downy, pale equalling the 

 glumes, awn projecting more than half its own length beyond the 

 pale.—E.B. 759. St. 8. 1. P. 4.— Root fibrous, scarcely 

 creeping. St. 1 — 3 feet high. In salt marshes the base of the 

 St. becomes fleshy and the plant may be taken for A. bulbosus. 

 Upper sheath slightly inflated. Ligule short, obtuse. Spike 

 1 — 3 in. long, branches 4 — 6-flowered. Anth. yellow. Styles 

 combined. — Rich pastures. P. IV. — VI. 



2. A. alpinus (Sra.) ; St. erect smooth, pan. oblong, glumes 

 acute connected below hairy, pale equalhng the glumes, awn pro- 

 jecting i of its length beyond the pale. — E. B. 1126. P. 4. — 

 Root somewhat creeping. St. decumbent at the base, then erect, 

 9 — 12 in. high. Ligule short, obtuse. Uppermost 1. usually 

 (not always) short and broad, i of the length of its inflated sheath. 

 Awn from about the middle of pale, sometimes wanting. Styles 

 combined. Spike not exceeding an inch in length ; silky branches 

 4 — 6-flowered. — On mountains at an elevation of 2500 — 3600 

 feet. Loch-na-Gar. Ben Lawers. Clova. P. VII. S. 



