500 GRAMINE^E. [BROMUS. 



short. Panicle 4-6 in., subsimple, strict, branches 2-3-nate and rachis 

 scabrid. Spikelets %-\% in., snbsolitary, green or purplish; empty glumes 

 longer than v&B. as' per ; fl. glumes hairy all over (var. mllo'sa, Bab.), or on 

 the nerves only, much the same in both. DISTKIB. Europe, N. Africa. 



** Annual. Keels of palea pectinate-ciliate. FL glumes erect loth in flower 

 and fruit (except B. max'iriius). 



3. B. ster'ilis, L. ; leaves flat hairy, sheaths compressed, panicle very 

 lax, branches few very long in ^-whorls, spikelets subsolitary, fl. glumes 

 7-10 much shorter than their awns. 



Fields and waste places, N. to Caithness ; ascends to 1,200 ft. in Derby ; 

 Ireland ; Channel Islands ; fl. June July. Root fibrous. Stems 1-2 ft., 

 erect, smooth, leafy. Leaves \-^ in. broad, flaccid, ribbed ; sheaths glabrous 

 or pubescent. Panicle 6-16 in. broad, nodding, very lax and open ; 

 branches horizontal and drooping. Spikelets with the awns 2 in., nodding, 

 green ; empty glumes long, narrow, upper twice the longest ; fl. glumes 

 very narrow, gradually narrowed into the very slender straight awn, 

 with 7 strong equidistant ribs, margins hyaline. DISTRIB. Europe, "VV. 

 Siberia, N. Africa ; introd. in N. America. 



4. B. madriten'sis, L. ; leaves narrow flat hairy, sheaths -terete, 

 panicle erect, branches few strict erect, fl. glumes 6-8 half as long as the 

 straight stout awn. 



Sandy waste places, S. Wales to Oxford, and Kent to Devon ; Tipperary ; 

 Channel Islands; (native? Wats.)', ti. June-July. Stems 6-14 in., strict 

 from an ascending base, smooth, leafy. Leaves ^-^ in., more or less hairy 

 or tomentose ; hairs on sheaths reflexed ; ligule short, truncate. Panicle 

 2-4 in., oblong, compressed ; branches appressed, short, and slender rachis 

 scabrid. Spikelets in., excluding the awns, dull green, rachilla smooth ; 

 lower empty glume subulate, half as long as the narrow linear upper ; fl. 

 glumes I? in., very narrow, scabrid, nerves 7 lateral close together, margins 

 and 2-fid tip broadly hyaline ; awn slender ; stamens usually 2. DISTBIB. 

 From France and Spain to Turkey, N. Africa. 



B. madriten'sis proper (. diaridrus, Curt.) ; rachis pedicels and glumes 

 scabrous. YAB. Curtis'ii, Bab. VAR. B. rig'idus, Roth ; rachis pedicels and 

 glumes pubescent. Channel Islands. 



5. B. max'imus, Desf. ; leaves flat hairy, sheaths terete, panicle 

 erect, branches few strict, fl. glumes 4-6 not g as long as the straight 

 awn. 



Sandy shores, Channel Islands ; fl. June-July. Root fibrous. Stems 6-10 in., 

 terete, pubescent. Leaves -J in. broad, bright green ; hairs on sheaths 

 spreading or reflexed; ligule short, truncate. Panicle 4-7 in., at length 

 nodding ; branches short, appressed, and rachis pubescent. Spikelets with 

 the awns 2-3 in., pale green or purplish ; rachilla glabrous ; empty glumes 

 hyaline, very narrow, awned ; upper twice as long as the lower, almost equal- 

 ling the lowest fl. glume ; fl. glumes thin, narrow, scabrid, narrowed into 

 the scabrid awn; nerves faint; stamens 2-3. DISTRIB. France, Spain, 

 Mediterranean. 



