128 ME. G. BENTHAM ON GBAMINE^. 



rhachis is not notched and tlie spikelets are not quite sessile, the 

 lower ones often two or three together on a very short branchlet, 

 not collateral. Nardurus, Eeichb., is the F. unilateralis, Schrad., 

 differing from the rest of the section in the flowering glumes 

 mucronate or shortly awned. Oastellia, Tineo, is the -F. tubercu- 

 lata, Coss. and Dur., in which the flowering glumes are minutely 

 tuberculate and the spike often shortly branched. Nardurus 

 montanus, Boiss., scarcely differs from F. {Vulpia) delicatula. 

 Lag., and F. cynosuroides, Desf.,is also referable rather to Vulpia 

 than to Gatapodivm. F. loliiim, Balansa, may really be said to 

 be intermediate between Festuca (Oatajaodium) and Lolium. F 

 unioloides, Kunth, is Brizopyrum siculum. Gatapodium fusiforme, 

 Nees, is Tripogon hromoides, Nees. 5. Scleropoa, Griseb. {Sclero- 

 chloa, Eeichb., not of Beauv.), annuals, often small, with one- 

 sided panicles, the short rigid branches bearing few almost ses- 

 sile spikelets, at flrst erect, then spreading or reflexed, giving 

 nearly the habit of Cutanda, but the glumes entirely those of 

 Festuca, 



67. Pantatheea, Philippi, and 68. Podophoeus, Philippi, are 

 monotypic genera from the island of Juan Pernandez, both very 

 near Bromus, but scarcely reducible to it. 



69. Beomps, Linn., is a fairly natural genus of about forty 

 species, generally distributed over the temperate regions of the 

 northern hemisphere, with a very few tropical or southern spe- 

 cies. Very near Festuca, with which it is closely connected 

 through Festuca gigantea, Vill. (Bromus giganteus, Linn.), it differs 

 generally in the flowering glumes distinctly notched or shortly 

 two-lobed at the end, with an awn between. the notches often not 

 quite terminal and sometimes slightly twisted, showing an ap- 

 proach to Avena, and in the grain (always adnate to the palea) 

 crowned by a little appendage or tuft of short hairs. These cha- 

 racters are, however, not quite constant ; and the four following 

 sections into which the genus has been divided run also much into 

 each other, though some of them are often regarded as separate 

 genera : — 1. Festucoides, Coss. and Dur. (Schcenodorus, Griseb.), 

 consists ol B. asper and 5. inermis, Linn., B. ereetus, Huds., and 

 their allies, tall perennials, coming nearest to Festuca, with the 

 awns usually very short or reduced to small points. 2. Steno- 

 Iromus, Griseb. (Anisanthe, C. Koch), mostly annuals, with narrow 

 spikelets and iong-awned glumes. Schedonorus of Fries and other 

 Swedish botanists, but not of Beauvois, includes both Festucoides 



