430 98. GKAMINE^. 



** Lower pale bifid. Nut adnate to the pales, furrowed on the 

 back. No 7-udiment of a third flower. Amopsis Fries. 



4. A. caryophyl'lea (L.) ; pan. spreading triply forked, spike- 

 lets rounded 'below, awn from below the middle of the pale and 

 extending considerably beyond its attenuate deeply bifid tip. — 

 E. B. 812. P. 24. Avena Koch.— St. 6—12 in. high. L. short 

 and narrow. Sheaths roughish from below upwards. Spikelets 

 small, rounded below, chiefly collected at the ends of the 

 branches which are sometimes divaricate with seed. — Dry 

 gravelly places. A. V. E. S. I. 



5. A. prce'cox (L.) ; pan. spikelike oblong, spikelets scarcely 

 rounded below, atvn from below the middle usually near the 

 base of the pale and extending considerably beyond its attenuate 

 deeply bifid tip.— .S. B. 1296. P. 25. Avena Koch.— Height 

 1 — 6 in. Pan. close, oval or oblong. L. very narrow. Sheaths 

 smooth. — Dry and sandy places. A. IV. V. E. S. I. 



28. Teise'ium Pers. 



1. T.flaves'cens (Beauv.) ; pan. much branched diffuse equal, 

 gl. very unequal about 3-flowered. — P. 64. Avena L., E. B. 

 952. — St. about a foot high. Radical 1. and sheaths hairy. 

 Spikelets- yellowish. Upper gl. oblong-lanceolate, acuminate. 

 Floral axis hairy, hairs short. — Fields. P. VII. E. S. I. 



29. Ave'na Linn. Oat. 



* Upper gl. 5 — Q-veined. Spikelets ultimately drooping. Root 

 annual. No lateral clusters of leaves. L. alike on both sides. 



1. A.fat'ua (L.) ; pan. erect, spikelets of about 3 fl., fl. falling 

 short of the gl. hairy at the base, lower pale bifid at the end. — 

 L. B. 2221. P. 37.- Height 8 feet. Fl. with long fulvous 

 hairs at their base by which it may be distinguished from A. 

 sativa, the cultivated Oat. — Oorn-flelds. A. VII. Wild Oat. 



E. S. I. 



t2. A. strigdsa (Schreb.) ; pan. seound, spikelets of about 2 fl., 

 fl. equalling the gl., lower pale ending in 2 long straight bristles. 

 —E. B. 1266. P. 26.— Height 3 feet. Very like A. sativa 

 but readily distinguished by the bristles at the end of the fl. — 

 Corn-fields. A. VII. E. S. 



** Upper gl. S-veined. Spikelets erect. Boot perennial. Lateral 

 clusters of I. barren. L. with raised ribs. 



3. A.praten'sis (L.) ; pan. erectwith simple or slightly divided 



