1917] Evans, — Notes on New England Hepaticae, XIV 271 



that the underleaves are often coaleseent on one side with a leaf; 

 in H. Flotowianus they are constantly free. The two species differ 

 finally in habitat. //. scutatns prefers logs or dry rocks, rarely as- 

 cending to a high altitude, while H. Flotowianus grows on damp 

 rocks or in subalpine bogs. 



Schiffner^ recognizes two modifications of the species, which he 

 designates as forma typica and var. uliginosus, respectively. He 

 admits, however, that they intergrade. In the forma typica, to which 

 the Mt. Madison specimens might be referred, the stems are more or 

 less prostrate, and the lobes of the leaves are often sharp. In the 

 var. uliginosus, the stems are more or less erect, and the lobes of the 

 leaves are mostly rounded. Forma typica grows in somewhat drier 

 localities and occasionally produces reproductive organs; var. uligi- 

 nosus grows in deep swamps and is always sterile. Full descriptions 

 of the species, with figures, may be found in European manuals. 



4. Calypogeia fissa (L.) Raddi. On banks, Mt. Washington 

 Carriage Road, New Hampshire, near the three mile post, August 7, 

 1917 {A. W. E.); on shaded earth. Triple Falls, Randolph, New 

 Hampshire, August 23, 1917 {A. W. E.); Vineyard Haven, Martha's 

 Vineyard, Massachusetts, August, 1917 (H. E. Greenwood). New to 

 New England. In 1907 ^ the wTiter published an account of C. fissa, 

 giving a full synonymy of the species. At that time he was able to 

 cite only two stations, namely: Lafayette, Louisiana (Langlois), and 

 Devonshire Marsh, Bermuda (E. G. Britton). Nichols ^ has since listed 

 the species from Barrasois, Cape Breton, Nova Scotia, and the three 

 following stations may now likewise be placed on record: Magnolia 

 Swamp, Mt. Pleasant, District of Columbia {M. B. Waite); Gaines- 

 ville, Florida (A^ L. T. Nelson); and Boston Mountains, Swain, 

 Arkansas (IF. H. Emig). It is clear from these citations that the 

 species is widely distributed in North America. Its range in Europe 

 is equally extensive, and it has also been reported from Japan. 



The species is characterized by shortly bidentate leaves and by 

 wide and deeply bifid underleaves, the lobes of which are blunt or 

 sharp and usually bluntly unidentate on the sides. When these 

 features are at all constant, as in the material from Bermuda, the 

 plant is easily distinguished from the closely related C. Trichomanis 

 (L.) Corda. Unfortunately this is not always the case. In some 



1 Lotos 48: 332. 1900. 2 Bryologist 10: 29. 1907. 2 Bryologist 19: 42. 1906. 



