538 



CVII. GRAMINE^. 



L^grSstis. 



lateral ones, project Into mucros ; awn from the very base, rou^h tml 

 geniculate and twisted; inner one very small, truncate andlootheH 

 accompanied on each side at the base by a pencil of white hairs. 



3. A. vulgaris With. (Jine B.) ; branches of the panicle 

 smoothish Its branchlets spreading after flowerin<r, ^lumes nenrl 

 equal, outer one rough on the keel above, "outer glumell 



3-nerved, ligule extremely short and truncate.— a.^w^fca- sniki 

 i_. ,_ ^_ ^_ ^_ jg^j^ p^^^^^ ^^_ ^^_ «c«, spike- 



lets awnless, 



spikelets awned. Parn. Gr, t. 13. 



/3. aristata : 

 With 



wito ; scarcely _3 inches high, spikelets often awned. Parn^ Gr 



t. 12. 



htf. Scot. p. 1081 (fi^ 



Meadows, pastures, and banks, common everywhere. 



i?pof creeping, throwing out many, mostly ascending culms, 1 

 If foot high. Sheaths usually smooth. Panicle purplish • 

 smooth, and the branchlets nearly so. ~ ' 



or 



Glumes lanceolate, smooth 



-, ^ , ^^«'«eZZas 2, thin, delicate, membranaceous' 

 unequal ; outer one a little shorter than the glumes, 3-nerved tridertatp' 

 awnless in a: '-"-■•J"™ — ^^ ■ • ■ . . - ', ' '^'^> 



shining, rough on the back. 



bearing an awn of uncertain length in ^., but mostly 

 short, arising from the central nerve a little below the middle of the 

 back ; inner glumella half as small, 2-nerved, bifid. Specimens of this 

 species sometimes, though very seldom, occur, bearing the rudiment 

 of a second floret upon a rather long foot-stalk, in the same calyx 



4. A alba L. {Marsh B.) ; branches of the panicle hispid its 

 branchlets erect after flowering, glumes nearly equal, outer one 

 rough on the keel all over, outer glumella 5-nerved, liaule 



elongated acute, 

 tt. 13, 14. 

 Parn. Gr. 



iolonifi 



t. 14. A. stolonifera L. : E. B. t. 1532. 



y 



at the joints, panicle 



-4. 



Culms as- 

 Panicle 



maritima; culms procumbent rootino- 

 small iobed. ° 



« ?'' ■^"^f ' road-sides, and in various other situations, abundant 

 /, a. — llant stouter than the last, and generally taller 

 cending, often rooting at the base, and throwing out runners, ramcu: 

 rather_ contracted, pale green or purplish, branchlets patent during 

 flowering, more erect afterwards, and giving the panicle a compact 

 iZXr''; "T l'^' '^°^^ '" ^' '^'^'Saris, as are the ^/..i; 



U nnlf .7 o"' '"' ^ "'""' ^"^ ^' ™^"y ^^^th, and the inner one 

 s only faintly 2- or 3-nerved at the base, nearly entire and obtuse at 

 the extremity. In some there is a short awn at the base of the outer 

 glumela : this constitutes the A. compressa WiUd. ; and occasionally the 



no R fiT ''"'r'^'^"^' ^1^^" it •« the A. syhatica Linn. We know of 

 n^ British awnless Agrostts which may not be reduced either to A. 

 vulgaris or A._ alba. The two species are indeed very closely allied. 



Upper glume the larger, 3-nerved, as long as the lower glumella ; lower 

 l-nerrea. Outer glumella with a long awn from near its summit. 

 Neuter fioret filiform. Apera. 



'. A. Spica vcnti L. {spreading silky B.) : nanicle snreadin?.. 



** 



f 



la] 



A 



