Gramineas. 
411 
parous. PL forming a dense tuft; Is rolled up; panicle 
dense.—Dry slopes; W. (Branson, Sion &c.). 4 
concinna Gaud. 2468. 
4 (1). Stem and 1.-sheaths compressed-ancipitate . 5 
— Stems and sheaths** at all events the stems, cylindric, 
rarely the stems slightly compressed . . . 8 
5. Rt-stock with elongated stolons. L.-sheaths almost smooth. 
Lower branches of the panicle gen. 2 — 3 together (in 
b. Langeana Rchb. 4—5). Stems 20—40 cm, arched-as¬ 
cending.—Fields, walls; distrib. 6 compressa L. 2569. 
— Rt-stock without or with short stolons. L.-sheaths rough. 
Lower branches of the panicle gen. 4—5 together 6* 
6. Ligules oblong, acute. Stem 40—50 cm . . IS 
— Ligules short, obtuse. Stem 70—100 cm . . 7 
7. Ls linear-lanceolate, broad (5—10 mm), suddenly acumi¬ 
nate at the top and cap-shaped. P. Chaixi Yill.—Alp., 
subalp. and Jura. 6 sudetica Hank. 2470. 
— Ls longer than in the last, narrowed insensibly, very 
acute.—As the last; western Switz., especially in the 
Jura. 6 .hybrida Gaud. 2471. 
8 (4). Rt-stock with elongated stolons ... .9 
— Rt-stock without or with short stolons . . 10 
9. Lower branches of the panicle gen. 4—5 together. Li¬ 
gules short, truncate.—Yaried: rad. ls (b. angustifolia L.), 
rarely all (c. strigosa Hoffm.) folded-setaceous, or ls 
shorter, broader and glaucous (d. humilis Ehrh.)\ the 
stem rarely compressed-ancipitate (e. anceps Gaud.).— 
Meadows, pasturages, walls; everywhere 5 
pratensis L. 2472. 
— Lower branches of the panicle gen. 2—3 together. Li¬ 
gules of the upper ls oval. Ls of the stolons disti¬ 
chous. P. cenisia Koch., P. flexuosa Wahlb.—b. Halle- 
ridis R. Sch. Spikelets greenish (not coloured); glumes 
broader, oval-lanceolate (Rap.).—Stony places of the Alp.; 
Hasenmatt in the Jura. 7 . distichophylla Gaud. 2473. 
10 (8). Branches of the panicle almost or entirely smooth, 
the lower ones 1—2 together. (Ligules oblong) . 11 
— Branches of the panicle rough, the lower 4 — 5 together, 
in poor specimens also 3 — 2 . . . IS 
11. Branches of the panicle spreading horizontally, finally 
bent downwards. Ann. pi. or, in high lying districts, 
where the spikelets are coloured dirty violet, the pro¬ 
strate and rooting stem (b .supina Sckrad.) living through 
the winter.—Grassy places, road-sides; everywhere. 4—10 
annua L. 2474. 
— Branches of the panicle erect-spreading. Perenn. pis 12 
12. Panicle with almost capillary branches (which tremble 
when the pi. is held in the hand). Spikelets containing 
