44 Hart's-Tongue 



scurely chaffy or paleaceous, especially below along midrib: 

 scales coloriess or bronze-colored, often with bronze-colored 

 cross-barred centres, narrowly lanceolate or linear-acuminate: 

 color bright or deeper green: texture subcoriaceous. 



Venation pinnate, free or with occasional areolae: primary 

 branches of midrib, excepting the basal, once to three times forked 

 or in apex of blade simple; the basal more complex, repeatedly 

 branched. 



Sori linear, contiguous and faced in pairs on adjoining veins, 

 commonly one sorus of each pair extending along more or less 

 of the inferior veins of a primary branch of midrib and the other 

 similarly borne on the superior veins of the next adjoining pri- 

 mary branch, occasionally both on veins of the same primary 

 branch: the opposed indusia at first flat and overlapping, entire 

 or subentire. 



Spores reticulate, verrucose. 



Habitat. Crevices of limestone rocks or earth upon lime- 

 stone. On hummocks in dark, moist, rocky woods, on talus, 

 and in or about the mouth of open chasms, particularly in shaded 

 cold places near water.* 



Range. Central New York, Tennessee, New Brunswick, 

 Grey and Simcoe counties, Ontario. Also in Alaska (?). 



Phyllitis scolopendrium (L.). Newman, Hist. British Ferns, ed. 2, 10. 

 1844. 



A splenium scolopendrium. Linnaeus, Sp. PL, 1079. 1753. 

 Scolopendrium vulgare. J. E. Smith, M6m. Acad. Roy. Sci., Turin, 5: 421. 



1793- 



Scolopendriu mscolopendrium. Karsten, Deutsch Fl., ed. i. 278. 1880-83. 



♦ W. R. Maxon. See Femwort Papers, 30-46. 1900. 



