MIDDLESEX FLOEA. 131 



C. arundinacea, Kunth. (G. aquatica, Smith, Man.) Eeed 



Meadow Grass. 



Somerville (C. E. PerMns) ; Medford (Miss A. M. Symmes) ; 



"Waltham List. 

 G. fluitans, R. Br. 



Maiden, Cambridge, Concord, et al. Not uncommon. 

 G. .acutiflora, Torr. 



Medford (Wm. Boott) ; Maiden (C. E. Perkins) ; Cambridge (Dr. 



C. W. Swan) ; Waltham List; Concord (E. S. Hoar). 

 G. maritima, Wahl. Sea Spear Grass. 



Cambridge (Bigelow's PI. Bost.) ; Maiden (H. A. Young) ; Somer- 

 ville (C. E. Perkins). 

 G. distans, Wahl. 



Somerville (C. E. Perkins) ; Maiden (Wm. Boott). 



Pestuca, L. 



F. Myurus, L. 

 N. Chelmsford, wool waste (Rev. W. P. Alcott) ; BUlerica, wool 

 waste (Dr. C. W. Swan). Adv. fromEu. 



F. tenella, Willd. 

 Medford, Chelmsford, Winchester, et al. Not common. 



P. oviNA, L. Sheep's Fescue. 

 Medford (C. E. Perkins). 



F. OVINA, L., var. glauca. 

 Reading, introduced and becoming common (W. H. Manning). 

 Nat. from Eu. Leaves thicker and bluish-green. 



P. DURiusCDLA, L. (P. oviua, L., var. duriuscula. Gray, Man.) 

 Not uncommon. 



P. RUBRA, L. ? (P. ovina, L., var rubra. Gray, Man.) 

 There are in the county certain forms with short running root- 

 stocks which ought probably to be referred to this species. 



F. varia, Haenk., Ysa:flavescens. (P. flavescens, Bellard). 

 Chelmsford, July 3, 1883 (Dr. C. W. Swan). Adv. from Eu. 

 " Panicle narrow, contracted, except during anthesis ; its branches 

 single or in pairs ; spikelets 5-8 flowered ; flowering glume obscurely 

 5-nerved, gradually tapering above the middle, short-awned or awn- 

 less; ovary bearded at the top; leaves involute, thread-form, 

 roundish; ligule oblong; roots fibrous, without runners. Leaves 

 grass- or bluish-green. Spikelets variegated with white, green 

 and purple ; ligules either obtuse or acute ; var. flavescens : spike- 

 lets pale and much less variegated." Koch, Taschenb. d. Deutsch. 

 & Schw. PI. Might be taken for a form of P. rubra, L. 



P. ELATIOK, L. 



Reading (W. H. Manning) ; et al. 



