TRIANDRIA. DIGYNIA. BromUS. 



103 



rigens. 18. B. panicle fp iked : fpikelets fubfeffile ere6l pubefcent 



chiefiy four-flower'd. Jiiffening, 



racemofus. 13. B. raceme moftfimple, peduncles one-flower'd, flow- 

 ers fix-flower'd polifli'd awn'd. racemed, 

 trijiorus, 16. B. panicle expanding, flowers chiefiy three-flower'd. 



three -flowered, 

 madrttenfis. 9. B. panicle thinner erecl-expanded, fpikelets linear : 



the intermediate ones double, pedicels thick- 

 ened above. madrld, 

 ramofus. 20. B. culm moft branchy, fpikelets feflile, leaves invo- 

 lute-awl 'd. hi'anchy, 

 plnnatus. 14. B. culm undivided, fpikelets alternate fubfeflile co- 

 lumnar fomewhat awn'd. feather* d^ 

 crijlatus* 15. B. fpikelets two-rankwife imbricated feflile deprefs'd. 



crejled, 



dljlachyos. 17. B. fpikes two ereiSl alternate. tzuo-fpiked, 



Jiipoides. B. panicle eredlifh, peduncles fword-form. Jiipa- 



like. 



90. STIPA. 



pennata, 

 juncea, 



capillata, 



Arijlella, 



1. S. 



3. s. 



2. S. 



s. 



fpicata, S . 



tenacijjima. 4. S. 



Gvenacea, 5. S. 

 me?nbranacea.b» S 

 arguens. 7. S. 



fpinifex, 8. S. 



CaL 2-valved, one-flower*d. Cor, exte- 

 rior valve with a terminal av^n : bafe 

 jointed. 



awns woolly. feathered. 



awn naked ftraight, calyxes longer than the feed 

 polifh'd within. ruJJ).' 



awns naked curvated, calyxes longer than the feed, 

 leaves pubefcent within. hairy ^ 



awns naked ftraight fcarcely tv/ice as long as the 

 calyx. awnlet. 



awns half-naked, flowers fpiked. 5. fp'iked, 



awns hairy atthe bafe, panicle fpiked, leaves thread- 

 form, moji tenaceous. 



awns naked, calyxes equalling the ^Qe.d. oat, 



. pedicels dilated membranous, membranous, 



awns naked, bra^tes bearded at the bafe, florets 

 feflile-fafcicled. creeking. 



florets awnlefs, bra6les of the heads fafcicled great- 

 eft dagger'd. thorn-making. 



91. AVENA. 



