104. THREE 



91. AVENA. 



fibirtca. I. A. 



glattor, 2. A. 



Jliplformis, 15. A. 

 penfyhanica, 3. A. 



Jceflingiana. 4. A^ 



fativa, 5. A. 



nuda, 6. A. 



fatua, 7. A. 



fefquitertia, 15. A. 

 pubefcens, 13. A. 

 /^r/7/V. 8. A. 



Jlavefcens, 9. A. 

 jragilis. 10. A. 



purpurea. 



MALES. TWO FEMALES. Avena. 



CaL 2-valved, aiany-ilower'd : awn 

 dorfal contorted. Oaf. 



panicled, calyxes one-flower'd, feeds fliaggy, awn 

 thrice as long ai the calyx. fberian, 



panlcled, calyxes two-flovver'd, the hermaphrodke 

 floret almoft awnlefs, the male one awn'd. 



taller, 



panlcled, calyxes two-flower'd, awns twice as 

 long as the (ttd^ culm bianchy. Jiipe-form. 



panicle attenuated, calyxes tv/o-flowerM, feeds 

 villous, awns twice as long as the calyx, pen- 



fylvanlan. 



panicle contra(5led, Horets two-fold, one peduncled, 

 both two-awn'd at top, awn on the back refledl- 

 ed . loefiingian, 



panided, calyxes two-feeded, feeds poliih'd one 

 awn'd. cultivated. 



panicled, calyxes three-ficwer'd, receptacle ex- 

 ceeding the calyx, petals awn'd on the back; 

 the third floret awn'cfs. naked, 



panicltd, calyxes three-flower'd, all the florets 

 awn'd and hairy at the bafe. fools. 



panicled, calyxes chiefly three-flower'd, all the 



florets awn'd, receptacles bearded. fefquitertidn. 



fubfpiked, calyxes chiefly three-flower'd hairy at 

 the bafe, leaves flat pubefcent. puhejcent, 



panicled, calyxes five-flower'd : the exterior flo- 

 rets and awns hairy at the bafe, the interior 

 awnlefs. fieri Is, 



panicle loofe, calyxes three-flower'd fhort, all the 

 florets awn'd. yellowijh. 



fpiked, calyxes four-ftower'd longer than the 

 floret. fragile. 



fubfpiked, calyxes five flower'd. fneadotu. 



fpiked, calyxes fix-flower'd longer : the exterior 

 petal awn'd and fork'd at top. fpiked. 



fubfpiked,fpikelet>two'd: one peduncled, with awp.s 

 divaricated, c;:lyxes eight-flower'd. hro?nus-like. 



calyxes three-flower'd hairy. S. hifpid. 



panicle condentld, calyxes two-flower'd awl'd, 

 corol pubefcent, intermediate awn twifl:ed cur- 

 ved. S. cape, 



panicle coridtnfed, calyxes three-flower'd egg'd, 

 corols villous : exterior glume tvvo-cleft, awn 

 terminal infltctLd, 6\ purple, 



A. 



