138 



Sphagnum papillosum, Lindb. 



Essex woods and Middleton. "Probably not sufficiently distinct 



from S. palustre" (Austin). 

 Sphagnum laricinum, Spruce, var. platyphyllum (^SulUv.) 



Austin. (S. neglectum, var. Aust. Muse. Appal.), (S. platyphyllum, 



SuUivant in a letter to Austin, 1868). 



In a pool, on the line between Boxford and North Andover. A 



curious submerged species resembling an alga. 



Sutoorder DSrtYA.CE.aE. 



Tribe ■WEISIB^E. 



Weisia viridula, Brid. 

 Essex ; Beverly, June, 1877 (Mary K. Eobinson) ; Amesbury, etc. 

 Frequent. 



Tribe DICRANK^E. 



Dicranum scoparium, L. 



Rocky woods. Common. 

 Dicranum Schraderi, Web. & Mohr. 



Boxford. 

 Dicranum congestum, Brid. 



Middleton. 

 Dicranum flagellare, Hedw. 



Boxford. 

 Dicranum montanum, Hedw. 



Essex, Boxford. 

 Dicranum fulvum, H/c. 



Swampscott, Essex. 



Ceratodon purpureus, Brid. 

 Eocky pastures and roadsides. Common. 



Tribe XiBTJCOBRYBJE;. 



Leucobryum vulgare. (L. glaucum, Hampe') . 

 In woods. Frequent. 



Tribe inissiDENTEJE. 



Pissidens osmundioides, Hedw. 



Boxford. 

 Fissidens taxifolius, Hedw. 



Swampscott (E. M. Shepard). This specimen varies from the 



typical form. 



