AGROSTIS. 395 



2. A. interrupta (Beauv.) ; pan. close, anth. oval. E. B. S. 

 2951. St. 1 2 ft. high. Pan. -branches dividing from their 

 base, never spreading. Awn 3 or 4 times exceeding the pale. 

 Sandy fields. Pampisford and Chippenham, Cambridgeshire. 

 Thetford, Suffolk. A. VI. VII. E. 



21. AGROSTIS Linn. Bent-grass. 



1. A. setacea (Curt.); panicle close oblong, branches and 

 pedicels scabrous, gl. unequal acute, lower pale erose at the top 

 4-ribbed, lateral ribs terminating in short setae, kneed and 

 twisted awn from the base of the pale and twice its length, /. 

 setaceous, sheaths rough, ligule oblong acute. E. B. 1188. P. 

 83. Root tufted. L. short, involute, almost capillary. Pan.- 

 branches short. Midrib of lower glume scabrous 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 scabrous, gl. unequal acute, lower 

 pale erose 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, 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 erose at 

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

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

 absent. Peaty heaths. P. VII. VIII. 



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 (Lightf.) ; 

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

 smut. Rather dry places. P. VII. 



4. A. alba (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. j8. maritima; st. pro- 

 cumbent, rooting at the knots, panicle lobed. E. B. 1532. 

 Fields, &c. /3. Sea-sands. P. VII. - m. 



