117 



ScirpuB validus, Vahl. (Great Bulrush.) 



Newbury (Oakes) ; Pleasant pond, Wenham, growing seven or 



eight feet high; West Gloucester, Byfleld, etc. This species is 



sometimes found in bracliish waters. 

 Selrpus debilis, Pursh. 



Lawrence, above the dam on the Merrimac (J. E.). Scarce. 

 Scirpus Bupinus, L., var. Hallii. (Gray's Manual). 



Winter pond, Winchester, 1878 (E. H. Hitchings). Beyond the 



county limits, yet within the latitude, and but a few miles to the 



westward. 

 Scirpus maritimus, L. (Sea Club-Rush.) 



Common in brackish water. Specimens were collected at Kera- 



wood, Salem, 1879, five feet high, bearing pandclee three times 



th» ordinary size. 

 Scirpus fluviatills, Gray. 



Ipswich river, Aug., 1876 (J. E.). Rare. 

 Scirpus sylvaticus, L. 



"Along brooks, eastern Massachusetts, W. Boott," etc. (Gray's 



Manual, 5th ed.), Lawrence, August 5, 1879. Specimens are fre- 

 quently met with where the styles are two-cleft, and, hence, the 



achenium lenticular. 

 Scirpus microearpus, Fresh 



Shore of the Merrimac, from Lawrence to Newburyport. Not very 



common. 

 Scirpus atrovirens, Muhl. 



Shores of Ipswich and Merrimac rivers. North Andover, Danvers 



(J. H. Sears). Scarce. 

 Scirpus Eriophorum, Michx. 



Meadows. Very common and variable, flowering from June to 



September. 

 Scirpus line'atus, Mickx. 



Essex county, about 1824 (memo. Dr. Chas. Pickering). Not iu the 



county herbarium P. A. S. 



Eriophorum alpinum, L. 



Hamilton (Oakes) ; Boxford (J. R.) ; Georgetown (Mrs. C. N. S . 



Horner). Abundant where it grows at all. 

 Eriophorum vaginatum, L. 



Long pond, Saugus (Herbert A. Young). It is quite probable that 



this species may be found in other similar localities. 

 Eriophorum 'Virginicum, L. 



Bogs. Frequent. 

 Var. album (Gray's Manual). 



In similar situations. Common. 



