SYNOPSIS OF THE GENEIU. 



26. AGROS'TIS, [Page 91.] Panicle loose. Glumes two, unequa 

 longer than the gluinelles. Glumelles two, unequal, th 

 shorter valve largest, with or without an awn, the inner on 

 sometimes wanting. 



ff Spikelets t^vo or three- floivered. 



26. CATABRO'SA, [Page 96.] Panicle loose or close. Spikcld 



two or three flowered, sometimes with a fourth imperfec 

 floret. Glumes unequal, membranous, obtuse, mud 

 shorter than the florets. Glumelles nearly equal, ribbed 

 awnless, the extremity truncated, erose. 



27. AI'RA, [Page 96.] Panicle loose or close. Spikelets tw< 



flowered. Glumes unequal. Glumelles unequal, the oute 

 valve mostly awned near the base. Fruit free. 



28. HOL'CUS, [Page 102.] Panicle loose. Spikclels two flowered 



Glumes nearly equal, longer than the florets ; lower flor* 

 perfect and awnless ; upper with stamens only, and awncd 

 Fruit coated with the indurated gluinelles. 



20. ARRHENATH'ERUM, [Page 104.] Panicle loose. Glumes tvrc 

 unequal, two flowered ; lower floret with stamens only, ant 

 a loij^ joiuted awn, arising from near the base of the oulei 

 valve ; the upper perfect, and the outer valve with a shon 

 straight bristle near the apex. 



30. PANI'CUM, [Page 105.] Panicle erect, compound. Glumci 



two, unequal, two-flowered; the lowest smallest, pointed 

 or awned. Florets dissimilar. Glumelles of the fertile 

 floret two, cartilaginous, the external one concave, the in- 

 ternal plane ; glumelles of the neuter or male floret, one 01 

 two ; the external membranous, pointed, or awned ; the 

 inner smaller, often absent. 



31. SETA'JLUA, [Page 106.] Panicle spiked, cylindrical. Glumes 



two, unequal, two-flowered, the spikelcts supported on short 

 branched pedicles, two or three of which are supported by 

 a bristly involucre. Florets dissimilar. Glumelles of the 

 perfect floret two, unequal, cartalaginous ; glumelles of the 

 neuter or male floret, one or two ; membranous; the smaller 

 one sometimes absent. 



32. SESLE'KIA, [Page 107.] Panicle spiked. Glumes two, nearly 



equal, pointed or awned at the apex ; glumelles nearly 

 equal ; the outer jagged, awned, at the apex ; the inner 

 bifid. 



33. HiERO'CHioii, [Page 108.] Panicle spiked. Glumes two, 



