6 MISCELLANEOUS PAPEKS. 



standpoint this is not so important, since the two plants are very 

 similar in habit, and it is probable that in many localities the latter 

 would prove quite as undesirable as chess. 



Bromus unioloid.es (Willd.) H. B. K. 



(B. schraderi Kunth.) 



Rescue Grass. Schrader's Brome Grass. Arctic Grass. 



Florets, or " seeds,"" 11 to 25 mm. (£ to 1 inch) long-, strongly com- 

 pressed from the sides, sharply keeled along the back, lanceolate as 

 viewed from the side, the apex tapering and usually tipped by a short 

 awn, at the base of which the glume is slightly notched; margins of 



the glume membranous -edged 

 and usually not infolded ex- 

 cept at the base; veins 4 or 5 

 on each side of the midnerve, 

 or keel, evident as narrow 

 ridges; palea two-thirds to 

 three-fourths the length of 

 the glume, which wholly in- 

 closes it; grain folded length- 

 wise and tightly clasping the 

 infolded center of the palea. 

 a b The florets are light or yellow- 



Fig. 1.— Florets, or seeds, of rescue grass (Bromus unio- . , , qtraw-polored 



loides) : a, side view of a seed; 6, front view of a seed, l*>h & 1 own 01 StraW C0101 eQ > 



showing the palea and pedicel between the edges of often greenish and sometimes 



the glume; c, seeds, natural size. purplish. The SUrf ace Varies 



from smooth to very finely rough-hairy, the latter condition being 

 particularly evident on the veins and pedicel. When spread thinly 

 on a level surface the seeds lie on one of the flattened sides. (Fig. 1.) 



Bromus secalinus L. 

 Chess. Cheat. Willard's Brome Grass. 



Florets about 7 mm. (i to ft inch) long, exclusive of the awn, which 

 varies from 1 to 3 mm. in length, not compressed, cylindrical or some- 

 what spindle-shaped, obtuse at the apex; glume notched at the apex 

 above the insertion of the awn; margins more or less infolded below 

 the middle, narrowly or scarcely membranous-edged above the middle, 

 usually not at all flaring at the apex; veins 3 on each side of the mid- 

 nerve, very indistinct; palea equal to the glume, deeply grooved con- 

 formably with the grain, the keels hispid-ciliate and partially or wholly 



a The seeds of these grasses in a commercial sense consist of the grain inclosed in 

 the chaff — i. e., glume and palea. 



