5. 



■]ce as 



seems 



e 



fruit 

 Ivari- 

 ubes- 





AvenaJ] CYii. gkamine^. 565 



■ 



i^Sl^ j ones. Glumes 2, membranaceous, 3- or many nerved. GlumeU 



, lattet I ^^^ ^' lanceolate, hairy at the base, herbaceous, at length carti- 



^ \k laginous and firmly inclosing the earyopsis; outer one with a 



^''' Jj| long twisted geniculate dorsal awn, with two points or bristles 



''^^jl.Va at the summit. — JSTame of doubtful origin, which we cannot 



|^^% trace to any language older than the Latin; perhaps, therefore, 



'^^^aoj from foeniim^ hay. 



^^^^}^l * Smaller glume 5^7 -nerved, larger one 5 — 11 nerved. Outer glumella. 



^^^e 5 — 8-nerved, Spikelets ultimately drooping. Ovary hairy at the 



^™(1- top. Annual plants. 



1. A. fdtua L. (wild O.) ; panicle erect, spikelets drooping of 

 about 3 scabrous much-awned florets smaller than the flumes 

 with long fulvous hairs at the base, outer glumella bifid at the 

 'eadinj | summit, root fibrous. E. B. t. 2221 : Parn. Gr. t. 27. 



simple I Corn-fields, frequent. ©, 6— 8.— CwZ/w 2— 3 feet high. Leaves 



^inear- I linear-lanceolate. Ligule obtuse. Glumes large, membranous, ovate- 



■tjglu- 3 lanceolate, shining at the margins, keeled, acuminate, many-ribbed. 



3 pro- . OutQY glumella with long fulvous hairs at its base, bifid at the point. 



afalcu3 ^^'^ of each floret long and twisted, and constituting an excellent 



hygrometer.— The cultivated Oat, A. sativa, differs from it in having 



_n one or more upper florets imperfect and awnless, in the shorter awn 



^^l and absence of fulvous hairs at the base of the florets. 



id only 



;ndry. 2. A. strigosa Schreb. {Bristle -pointed O.) '^ panicle erect, 



to tie branches all secund, spikelets of 2 perfect florets each awned as 



long as the glumes and terminated by 2 long straight bristles. 



E. B. t. 1266 : Parn. Gr. t. 26. ° ° , 



^"'''^^ Corn-fields; common both in England and Scotland. 0. 6, 7. 



— Ligule oblong, often ragged. Very much like A. sativa, but readily 

 edun- f distinguished from it, as well as from A. fatua, by the florets ending 



-Ian- ' ^" ^^^ *^"S bristles. 



Smaller glume l—3-nerved, larger one S-nerved. Outer glumella 

 distinctly 5-rihbed. . Spikelets erect. Ovary hairy at the top. 

 Ligule acute. Perennial plants. 



I 3. A.pratensisL. (narroiv-leaved perennial O.); panicle erect 



ft j- 1 smiple or slightly compound lax, spikelets erect oblong com- 



itis R pressed of 3—6 florets, lower floret scarcely so long as the larger 



glume, leaves glabrous but more or less scabrous on the surface, 



root tufted. — a. vulgaris; lower leaves involute, sheaths rounded 



^ the 1 ^^^"^v smooth, spikelets 3— 5-flowered. E. B. t. 1204. Tri- 



: setum. Parn. Gr. t. 52.-/3. longifolia; lower leaves long flat 



and Imear, sheaths flattish slightly keeled roughish. Trisetum 

 Parn. Gr. t. 52.— y. alpina; lower leaves short flat, sheaths 

 t.) rounded or compressed roughish, spikelets 5— 6-flowered. Tri- 



setmn Pam Gr. t. 53. A. alpina ^'wi. A. planiculmis £ 



^-^^^^^ 



