TRIANDllIA— DIGYNIA. Aoiostis. 89 



str ate i;t cms. Leaves narrow, acute. Panicle much branch- 

 ed, generally spreading, of innumerable, solitary, erect, 

 smali Jloxi:crs. Cal. roughish, often coloured. Cor. most 

 frequently pale, or whitish. Seed very minute. 

 A^rostis, as generally understood by authors, is justly said 

 by Mr. Brown to be an artificial genus, and thereibre I 

 should scaicely hesitate to admit Tvichodium of Michaux 

 and Schrader, as an artificial separation from it, difierino- 

 only in having a single valve to the corolla. Such Schrader 

 found to be the case with A. canina, but I do not, and 

 therefore we have nothing to do with Trichodiwn in a 

 British Flora. 



* Axuned. 



1 . A. Spica vcjiti. Silky Bent -grass. 



Awn straight, rigid, many times longer than the corolla. 

 Panicle loosely spreading. 



A. Spica venti. Linn. Sp. PL 91. mUd. v. I. .36! Ft Br 77 

 Engl. Bot.v. 14. ^.O.-)!. K7iappt. 20. Leers \9.t.4. f. 1 Srhrad 

 Germ. v. I. 203. Fl.Dcm. t.SoS. . ■ ■ - 



Avena n. 1480. Hall. Hist. v. 2. 228. 



Gramen miliaceum majns, glumis aristatis, spadiccis et pallidis. 

 Rail Sijn. 405. 



G. segetum altissimiim, panicula sparsa. Scheuchz. A^r 144 

 t.'S.f. 10. A, B. Bauh. Theatr. 33./. 34. « • • 



G, harundinaceum. Ger. Em. b.f. 



G. agrorum venti spica. Park. Theatr. 1 158./. Loh. Ic. 3.f. 



In sandy corn-fields, occasionally overflowed, but not very common. 



In several parts of Norrolk 3 and near Warrington, Lancashire.* 

 Near Kingston u'pon Thames. Bishop of Carlisle. Between 

 Kennington and Camberweil. Mr. Groult. At X^'althamstcw. 

 Mr. E. Forster. 



Annual. June, July, 



Root of many tliick whorled fibres. Stems one or more, 2 or 3 feet 

 high, erect, leafy, smooth, jointed near the base, unbranched. 

 Leaves spreading, ribbed ■ a little downy above 3 rough beneatii ; 

 their sheaths long, ribbed, smooth. Stipula jugged. Panicle 

 large, silky in appearance, leaning to one side, and^elegantly wav- 

 ing with the wind 3 its branches numerous, in alternate bundles, 

 finely subdivided, rough and angular up^^ards. Cal. r.nd CV;r. 

 polished, often purplish 3 outer valve of the latter rough with mi- 

 nute tubercles, and remarkable for its long straight awn 3 inner 

 minutely cloven at the point. Sctd minute, ovale, jxiinted, very 

 smooth. 



