POA. • • 418 



but tapei-inff at the tip, uppermost knot covered, upper ligule 

 long acute, lower ones short rather blunt. — P.Jlexuosa Sm., E. B. 

 112:3 ? not of others. P. laxa Fr. ?— Root fibrous. St. 6—8 

 in. high. FL often viviparous. — Lofty mountains. Loch-na- 

 Gar. Ben Nevis. P. VII. VUI. S. 



4. P. lax' a (Haenke!); pan. lax slightly drooping, spikelets 

 oblong-ovate of 3 free fl., tower pale with .3 hairy veins, upper 

 sheath longer than its leaf which \sjlat and taper-pointed, upper- 

 most knot covered, ligules all long acute. — P. 38. P. stricta 

 Lindl. ?— Root fibrous. St. 6—12 in high. Fl. often vivi- 

 parous. — Lofty mountains, i Loch-na-Gar. P. VII. VIII. S. 



5. P. alpina (L.); pan. erect spreading when in flower, spike- 

 lets ovate of 3 or 4 free fl., lower pale with 3 hairy veme, upper 

 sheath longer than its leaf which is folded and rovmded behind 

 tlie tip, uppermost knot exposed, ligule long pointed. ■^^. B. 

 1003. P. 37 & 94.— Root fibrous, tufted. St. 6—12 in. high, 

 basal sheaths common to it and the tuft of leaves. Fl. often 

 viviparous. — Lofty mountains. P. VI. VII. , E. S. I. 



6. P. ca'sia (Sm.) ; pan. erect slender, spikelets ovate of 2 — -5 

 acute free fl., lower pale with 5 veins but only 3 hairy, upper 

 sheath about as long as its leaf which is folded and slightly in- 

 curved but tapering at the tip, uppermost knot near to the base of 

 the stem, ligule blunt. — Root fibrous. St. 6 — 12 in. high. Lowest 



Jl. longer than the large glume. — a. ctesia ; spikelets of 4 or 5 fl., 

 pan. rather spreading. • P. ca:^ Sm., E. B. 1719. P. 40. — j9. 

 glauca ; spikelets of 2 or 3 fl., pan. rather close, 1. broader. — 

 Mountains, a. Ben Lawers. Clova. (3. Snowdon. Ben Nevis. 



P. vn. E. S. 



tt Lower pan. -branches in fives or 2 or 3 together. Dorsal 

 and marginal veins of the lower pale hairy. 



7. P. nemordlis (L.) ; pan. rather drooping slender, spikelets 

 ovate-lanceolate of 3 or 4 webbed fl., lower pale with 6 veins but 

 only 3 hairy, upper sheath not longer than its leaf, uppermost 

 knot at about the middle of the st. exposed, ligule. extremely 

 short truncate.— E. B. 1265. P. 36.— Slightly creeping. St., 

 slender, 1 — 2 ft. high. Sheaths smooth. — a. ; st. slender weak, 

 pan. lax. — ^. angwstifolia ; st. and pan. very slender, 1. long and 

 narrow, uppermost knot near the pan., spikelets few 1 — 2- 

 flowered. — y. P. coarctata (Hall.); st. rigid, pan. close, spikelets 

 3 5-flowered. — S. glauca; st. slender, pan. with many long- 

 stalked spikelets, plant glaucous. — Shady places, y. On walls. 

 ^. Mountains. P. VL m E. S. L 



8. P. PameUii (Bab.) ; pan. erect large rather close oblong, 



