218 Rhodora [September 



upper course of the St. John River, just north of the Aroostook County 

 line (St. John and Nichols). Its distribution may perhaps he ac- 

 counted for by the fact that it is a plant of acid soils, in southern 

 New England at least particularly partial to damp sand, and that, 

 such habitats are largely lacking in northern Maine. Conversely, 

 it is, unlike' most plants of northern range, common on Cape Cod, 

 where such habitats arc to be found in abundance. 



VI. Chiefly the three southern States 



Selaginella apoda 



This is the Southern 15 of the last report. S. apoda is not reported 

 from Cape Cod, where suitable habitats for this plant of moist, 

 grassy places are lacking It reaches its northern limits at New- 

 fane, Vt., Hanover and Manchester, N. II., and Berwick, Me. 



VII. Coastal Plain 



Lycopodium inundatum, var. alopecuroides 



" Bigelovii 



The former is a plant of the Piedmont and coastal plain southward, 

 occurring ill our region only on Nantucket. The latter, like the 

 coastal plain species of the last report, penetrates further inland. It 

 is, however, certainly known to us no farther from the coast than 

 Woodstock, Conn., and Groton, Mass., and no farther north than 

 Plum Island, Mass. It has been reported from Sunderland, Vt., 

 and Mt. Desert Island, Me. The Mt. Desert plant and also speci- 

 mens from Cumberland, Me., distributed as var. Uigrhvii, appear to 

 us no more than, at most, transitional forms. We have Been no 

 specimens from the Vermont locality; it seems probable, however, 

 that this report is based cither on a misideiitification or on the mis- 

 application of Tuckerman's name made by Lloyd and Underwood. 11 



VIII. Calciphile Species. 

 Botrychium Lunaria Equisetuiu variegatuni, 



var. Jesupi 

 Equisetum variegatuni Selaginella selaginoides 



Botrychium Lunaria and Selaginella selaginoides are among our 

 " See Rhodora xxiii. l(M) (1<121). 



