come under my observation, have proven to be Tuckermam or the 

 variety borealis, notably the Mt. Desert locality of Redfield and 

 Rand's Flora. I cannot agree with Mr. Dodge in his East King- 

 ston, N. H., nor Newburyport, Mass, localities. Also reported 

 from Uxbridge, Mass., and Brattleboro, Vermont. It is extremely 

 rare in New England, to say the least, and the specimens from the 

 old localities should be verified. 



7. I. FOVEOLATA A. A. Eaton. 



Trunk 2- or rarely 3-lobed : leaves 15-70, very stout, 5-iscm. 

 long, pink, becoming olive-green, stomata few : plants apparently 

 polygamous : sporangium spotted ; macrospores 380-560 //, with 

 lower surface full of little holes, made by the close reticulation of 

 the thick walls, sculpture of upper faces more open ; microspores 

 22-35 (j. long, reticulated. 



Lamprey (or Pautuckaway) river, Epping, and Newmarket, 

 N. H. Mr. Dodge's East Kingston locality rests upon a single 

 plant. 



8. I. ECHINOSPORA DurieU. 



Not certainly known from America, our varieties all having 

 stomata, while the species does not. I have specimens from Brad- 

 ley, Maine, collected by Harvey, which I have examined so far in 

 vain for stomata. They may prove typical in this respect, but dif- 

 fer in other particulars. 



8a. I. ECHINOSPORA BRAUNii ( Durieu ) Engelm. 



Leaves 10-30, usually grass-green, spreading, 5-23cm. long ; 

 stomata few if immersed, many if emersed : sporangia pale spot- 

 ted, velum Yz indusiate ; macrospores 350-550 n in diameter, cov- 

 ered with short, broad, forked spinules, usually mixed with longer 

 slender ones. 



As commonly understood, this variety is found abundantly in 

 New England in muddy mill ponds and river banks, also in sand at 

 times, the plant then usually having a reddish tinge, and the leaves 

 often spiral, especially if submersed. Dodge says it is often found 

 where the water is very brackish, but I have been unable to verify 

 this. Though subject to three or more fest of tide in the Merrimac 

 at Newburyport, the water is sweet save under exceptional condi- 

 tions. I am unable to say whether the same conditions prevail in 

 the Maine rivers mentioned by him. 



