132 MIDDLESEX FLOEA. 



F. ELATiOR, L., var. genuina, Hack. 

 Maiden (F. S. Collins). 



F. ELATIOR, L., subsp. PEATENSis, Hack. (F. pratensls, Huds.) 

 Maiden, Medford, et al. 



These, in one form or another, are common, introduced and culti- 

 vated grrasses. Nat. from En. 



F. nutans, Willd. 

 Melrose (H. A. Young). Eare. 



Bromus, L. 



B. SECALiNDS, L. Cheat. ChessI 

 Not uncommon. Nat. from Eu. 



B. racemosus, L. Upright Chess. 

 Melrose (R. Frohock) ; Maiden (F. S. Collins) ; Cambridge (Walter 

 Deane). In cultivated grounds, etc. Adv. from Eu. 



B. mollis, L. Soft Chess. 

 Billerica (Dr. C. W. Swan) ; Maiden (F. S. Collins). Adv. from 

 Eu. 



B. Kalmii, Gray. Wild Chess. 

 Medford (C. E. Perkins) ; Waltham List; Concord (E. S. Hoar). 



B. ciliatuSj L. 

 Frequent. 



B. rubens, L. 

 Billerica, in wool waste (Dr. C. W. Swan). Adv. in wool from 

 Cal. A native of Eu. 



" Culms densely tufted, 6 to 9 inches high, and, with the narrowly 

 linear leaves and sheaths, pale green and densely soft-pubescent ; 

 panicle ovate, 2 to 3 in. long, with very short, erect branches, thickened 

 upwards and rough pubescent; spikelets about 6-flowered, an inch 

 long, including awns, more or less purplish; upper glume one- 

 third the longer, and about one-f ouith shorter than its floret ; lower 

 palet, like the glumes, rather coarsely pubescent, 7 lines long and 

 7-nerved, the intermediate nerves less distinct, terminatihg in two 

 very acute hyaline teeth nearly two lines long, the awn rather 

 longer than the palet ; upper palet with long weak hairs ; root fibres 

 pubescent." Bot. Cal. 



B. TECTORUM, L. 



Rather common, especially near railroads, in the eastern part of 

 the county. Nat. from Eu. 

 B. sterilis, L. 

 Winchester (C. E. Perkins) ; Billerica, with wool waste from Cal. 

 (Dr. C. W. Swan); Medford (Miss A. M. Symmes). Adv. from 

 Eu. 



