AGROSTIS. — poiTPoeow. 427 



ribbed, lateral ribs ending in short setae, Imeed and twisted awn 

 from near the base of the pale and twice its length, I. setaceous 

 involute, sheaths rough, ligiile oblong acute. — E. B. 1188. P. 

 83. — Root tufted. L. short, almost capillary. Pan.-branches 

 short. Midrib of lower glume rough in its upper half, slightly 

 excurrent. Upper pale very minute, a tuft of hairs at its base. 

 — Dry heaths in the South-west. P. VII. E. 



2. A. canina (L.) ; pan. spreading when in flower otherwise 

 close, branches and pedicels rough, gl. unequal acute, lower 

 pale jagged at the top 4-ribbed, kneed and twisted awn from 

 below the middle of and exceeding the pale, lower 1. setaceous 

 tufted, stem-1. narrow flat, sheaths smooth, ligule oblong acute. 

 —E. B. 1856. P. 15.— Trailing leafy shoots. St. decumbent 

 below, then erect. L. narrow: radical involute. Pan.-branches ^ 

 long, slender. Fl. green or purplish. Lower gl. not jagged at 

 the top ; midrib rough from rather below the middle. Upper 

 pale 0, or very minute. Awn sometimes very short or rarely 

 absent.— Peaty heaths. P. VII. VIII. E. S. I. 



3. A. vulgaris (With.) ; pan. spreading during and after 

 flowering, gl. nearly equal, lower toothed on the upper part of 

 the keel, ligule short truncate.— -E. B. 1671. P. 12 & 13.— St. 

 long, ascending or decumbent below and rooting at the knots, 

 sometimes with long prostrate stoles. Sheaths mostly smooth. 

 Pedicels toothed. Fl. rarely awned. — /3. A. pumila {lAg\itt) ; 

 csespitose, st. 2 — 3 in. high, fl. often awned usually infested with 

 smut. — Rather dry places. P. VII. E. S. I. 



4. A. al'ha (L.) ; pan. compact after flowering, glumes nearly 

 equal, lower toothed throughout its keel, ligule long, acute. — 

 E. B. 1189. P. 13 & 14. — St. procumbent and rooting below, 

 then erect, often with long prostrate stoles. Sheaths roughish. 

 Pan. spreading with flowers, afterwards close. Pedicels very 

 much toothed. Florets rarely awned. — /3. A. stolonifera (L.) ; 

 st. procumbent and rooting, panicle lobed. E. B. 1532. — 

 Fields &c. /S. Sea-sands. P. VII. Fiorin-grass. E. S. I. 



22. LAexr'nirs Linn. Hare's-tail-grass. 



[£. ovdtus (L.).—E. B. 1334. P. 88.— St. 4—12 in. high. L. 

 broad, lanceolate. Spikes ovate, soft, with long protruded awns. 

 — Sandy places in Guernsey. A. VI. VII.] 



23, Poltpo'gon Desf. 



1. P. monspelien'sis (Desf.) ; awns more than twice as long as 

 the bluntly and shortly lobed glumes.—^. B. 1704. P. 11.- 

 Root fibrous. St. a foot or more high. Pan. dense, lobed, pale, 



