386 
92. GRAMINEiE. 
deeply bifid point. — E. B. 1296. R. 1675. P. 25. Avena Koch. 
— Ilcight 1 — 6 in. Panicle close, oval or oblong. No rudiment 
of a third fioret. L. very narrow. Often with difficulty distin- 
guished from the preceding. — Dry and sandy places. A. IV. V. 
25. CoRYNEi’HORUs Pa/. de.Beauv. 
1. C. canescens (Beauv.); panicle rather dense elongated, 
glumes longer than the fl. acuminate, awn from near the base of 
the pale, 1. setaceous. — R. 1190. Aira Sm., E. B. 1190. P. 110. 
— St. tufted, slender, 6 — 8 in. high. L. numerous. Panicle close, 
s])reading when in full bloom. Spikelets variegated with purple 
and white. Anth. dark purple. Lower portion of the awn dark 
3 ‘ellow, straight, cylindrical, longitudinally striated and slightly 
twisted; u])per part clavate, white tinged with purple. — Sandy 
■coasts of Norf., Sufi'., and Jersey. A. VI. VII. E. 
26. Trisetum Pers. 
1. T.Jlavescens (Beanv.); panicle much branched diffuse equal, 
glumes very unequal about 3-fiowered. — P. 54. Avena Sm., E. B. 
952. R. i694 — 1696. — St. about a foot high. Radical 1. and 
sheaths hairy. Ligule very short, obtuse. Sjiikelets yellowish. 
Uj)per glume oblong-lanceolate acuminate. Floral a.\is hairy, 
hairs short. — Fields. P. VII. 
27. Avena Lmn. 
* Upper (jlume 5 — 9-nerved. Spilcelets ultimately pendulous. 
1. A. fatua (L.); panicle erect, spikelets about 3-flowered 
droo])ing, fl. shorter than the glumes hairy at the base, outer 
pale bifid at the end. — E. B. 2221. P. 27. — Height 3 feet. Fl. 
with long fulvous hairs at their base by wiiich it may be distin- 
guisbed from A. sativa, tbe cultivated Oat. — Corn-fields. A. 
\HI. Wild Oat. 
2. A. strigosa (Schreb.) ; panicle secund, spikelets of about 
2 fl. (h’ooping, fl. as long as the glumes, outer j)ale ending in 2 
long straight bristles.- — E. B. 1266. P. 26. — Height 3 feet. 
Very like A. sativa but readily ffistinguished by the bristles at 
the end of the fl. — Corn-fields. A. VII. 
** Upper glume 5-nerved. Spilcelets erect. 
3. A. pratensis (L.) ; panicle erect with simple or slightly di- 
vided branches,_^. erect 3 — 6 longer than the glumes, 1. scabrous. 
— iJ. B. 1204. P.52. — Height nearly 2 feet. St. usually nearly 
round. L. usually short, narrow, acute. Branches of the pa- 
nicle generally simple bearing only one spikelet. — /3. lorigifolia 
(Par.); 1. much longer. — y. alpina; st. often compressed and 
sheaths carinate, branches of the j)anicle often bearing several 
