214 Rhodora [September 



our mountain-tops) the extreme of boreal conditions within our 

 territory. Species found in both may be expected to occur generally 

 in New England elsewhere : and so much collecting has been done 

 in both that the absence of any record of a given species from either 

 may be accepted with little or no doubt as representing the facts. 



It is to be understood that species which are alike in being found 

 throughout a given area may differ considerably in the frequency of 

 their occurrence. The groups here defined are, of course, likely to 

 require revision with increase of our knowledge. The committee 

 will be grateful for any data which modify the ranges as stated. 



I. Generally distributed. 



Botrychium ramosum Lycopodium complanatum, 



var. flabelliforme 

 " virginiannni Lycopodium lucidulum 



Equisetum arvense obscurum 



limosum 



var. dendroideum 

 Lycopodium tristachymn 



Although, at the present stage of our work, it. is impossible to 

 classify these species otherwise than as generally distributed and 

 though they occur in all, or very nearly all, parts of New England, 

 they differ somewhat in the details of their distribution. Only Equis- 

 etum artense, Lycopodium obscurum and its var. dendroideum seem to 

 occur quite evenly throughout. Botrychium rautotium, Lycopodium. 

 complanatum, var flabelliforme and L. trietachyum, though found in 

 the Ft. Kent-Van Huren region, apparently become noticeably less 

 common in northern Maine and were not observed by St. John and 

 Nichols on their journey from Moosehead Lake to St. Francis via 

 the upper reaches of the St. John River. Botrychium virgiuiauum , 

 though known from extreme southeastern Maine at Pembroke, con- 

 spicuously avoids the vicinity of the coast between that point and 

 the Kennebec valley. Lycopodium frisfacfiyum has, curiously, not 

 been reported from Rhode Island though occurring on all sides of that 

 state. It seems altogether probable that it will eventually be found 

 there. The two Hotrychiums, Equisetum limosum, and Lycopodium 

 lucidulum are very rare in the Cape Cod region; thereby, their ranges 

 form a transition to the following group. 



