mon in Rockingham county, N. H., and known from several ponds 

 in Essex county, and near Boston, Mass., ; also from North Ston- 

 ington, and Ledyard, Conn., Graves. 



3a. I. Tuckermani borealis n. var. 



Trunk bi-lobed, leaves 1020, 3-8cm. long, imm. thick, slightly 

 recurved at tip : sporanges sometimes showing a few spots ; mac- 

 rospores 600-783 /u, sculptured as in the species, but the markings 

 larger. 



This might perhaps as well be considered a variety of lacustris, 

 but the smaller leaves, wider velum, spotted sporanges and reticu- 

 lated spores, are characters enough to separate it, even if that spe- 

 cies were not so extremely rare. 



Somes stream, Mt. Desert, August 13, 1887, Kennedy; pond 

 north of Long Pond, Mt. Desert, September 22, 1892 (with Harveyi 

 and Tuckermani } Fernald; Somes stream, September 30, 1893, 

 Rand; Kennebago lake (leaves only 2.5-5011. long), January 12, 

 1895, Coville, no. 78 ; Somes stream, Mt. Desert, September 14, 

 1895, Rand; Pushaw Pond, Oldtown, Maine, August 21, 1899, 

 Hervey. I also occasionally find it in Lamprey river, at Epping, 

 New Hampshire. 



Type in the herbarium of A. A. Eaton ; co-types in the U. S. 

 National, and University of Minnesota herbaria. 



4. I. hieroglyphica n. sp. 



Aspect of Tuckermani : trunk bi-lobed : leaves 10-20, 6-7. 5011. 

 long, recurved, i-2mm. in diameter, blunt at tip : velum ^ indusi- 

 ate, sporangium unspotted ; macrospores 486-590 /a, polished, cov- 

 ered with vermiform, subconfluent and somewhat reticulated ridges, 

 becoming naked next the equator ; microspores 31-44 v, averaging 

 39 p, distinctly verrucose. 



The spores are unique in appearance ; the ridges are very bold, 

 and the rest of the surface unmarked. I have seen nothing like it 

 from any quarter, but Motelay's illustration oiflaccida spores gives 

 a fair idea of their appearance, though utterly unlike the species he 

 intends to represent. 



St. Francis lakes, Maine, type, Pringle; also Fernald from the 

 same place ; Moosehead lake, Harvey; Rangeley lakes, Coville. 



Type in the herbarium of A. A. Eaton ; co-types in the U. S. 

 National, and the University of Minnesota herbaria. 



