MIDDLESEX FLORA. Ill 



X. flexuosa, Muhl., var. pusilla, Gray. 



Wilmington (C. E. Perkins). 

 X. Caroliniana, Walt. 



Ashland (Rev. Thus. Moroug) ; Ashby (L. L. Dame) ; Martin's 



Pond, N. Reading (W. II. Manning). Apparently the commoner 



species here. 



ERIOCAULONACE/E. PIPEWORT FAMILY. 



Eriocaulox, L. 



E. septangulare, with. Pipewort. 

 Rather common. 



CYPERACE/E. SEDGE FAMILY. 



Cyperus, L. Galingale. 



C. diandrus, Torr. 



Common. 

 C. diandrus, Torr., var. castaneus, Torr. 



So'iierville (C. E. Perkins). 

 C. Nuttallii, Eddy, Torr. 



Rather common near ride-water. 

 C. aristatus, Rottb. (C. inflexns, Muhl., Man.) 



Winchester (C. E. Perkins) ; Cambridge, specimen in herb. B. S. 



N. H. 

 C. dentatus, Torr. 



Common. 

 C. esculentus, L. (C. phymatodes, Muhl., Man.) 



Lowell, Tewksbury and Dracut (Dr. C. W. Swan) ; Concord (F. S. 



Collins). 

 C. strigosus, L. 



Common. 

 C. strigosus, L., var. compositus, Britton. 



Maiden (F. S. Collins). Possibly introduced. 



"Umbel compound; spikelets k-h in- long? 4-5 flowered." N. L. 



Britton, Bull. Torr. Bot. Club, Vol. XIII., p. 212. 

 C. speciosus, Vahl. (C. Mlchauxiauus, Schult., Man.) 



Cambridge, (H. A. Young) ; Apparently scarce in the county. 

 C. Engelmanni, Steud. 



Fresh Pond, Cambridge (Walter Deane) ; Spy Pond, Arlington 



(H. A. Young). Not common. 



