MIDDLESEX FLOE A. 117 



C arctata, Boott. 



Ashby (Dr. C. W. Swan) ; Medford (C. B. Perkins) ; Maiden ("Wm. 



Boolt). 

 C debilis, Michx. 



Common. 

 C. gracillima, Schw. 



Lowell, Acton, Cambridge, Newton, et al. Not uncommon. 

 C. f lava, L. 



Common. 

 C. CEderi, Retz. 



Maiden (H. A. Young) ; Medford (Wm. Boott). 

 C.fulva, Good. 



Tewksbury (B. D. Greene, specimen in herb. B. S. N. H.) Not 



since reported, and probably adventive. 

 *C. IcBvigata, Smith. 



Tewksbury (B. D. Greene). Not since reported, and probably 



adventive. 

 C. pallescens, L- 



Common; including the form with wavy sheaths known as var. 



undulata, Carey, Concord (E. S. Hoar). 

 C. conoidea, Schk. 



Rather common. 

 C. laxif lora. Lam., var. patulifolia, Carey, (vai-. plantaginea, 



Boott, Man.) 



Maiden and Hopkmton (F. S. Collins) ; Medford (Wm. Boott). 



C. laxiflora, L., var. intermedia, Boott. 



Melrose (Rev. Thos. Morong) ; Maiden and Medford (Wm. Boott) ; 



"Woburn (C. E. Perkins) ; Wakefield (F. S. CoUms). 

 C. laxiflora. Lam., var. striatula, Carey, (var. blanda, Boott, 



Man.) 



Cambridge (L. H. Bailey, Jr.) ; Mekose (Rev. Thos. Morong) ; 



Winchester (Wm. Boott); Maiden and Wakefield (F. S. Collins). 



An abnormal form with enlarged and inflated pergynla, Wakefield, 



June 19, 1887 (F. S. Collins). 



C. laxiflora. Lam., var. latifolia, Boott. 



Acton (Walter Deane ; specimen in herb, of) ; Maiden (Wm. 

 Boott). 



It is doubtful if we have the type, which is thus characterized; 

 "Perigynium elliptic, attenuated at the apex, not prominently 

 nerved; beak not strongly curved; leaves 3 lines or less broad; 

 pistillate spikes an inch or more Ibng, narrow, loosely flowered, 

 cylindrical ; staminate spike long peduncled." Bailey, Prel. Syn- 

 opsis N. A. Carices. 



