Hepaticce of North America. 95 



palmately 2-4-cleft, the ventral ones amphigastria-like ; inner 

 involucre terminal on a ventral branch, large, oblong-cylindric, 

 obtusely trigonal, the mouth plicate, denticulate. (Jungerma- 

 nia pleniceps Aust. ) 



Hab Among Sphagna, White Mts., N. H. (Oakes). 

 Bib. Pro. Phil. Acad. 1869, p. 222. 



ff Leaves imbricate or subimbricate. 



5. 0. catenulata Lindb. Fruit-bearing branch short; 

 stem somewhat rigid, branching, with flexuous ascending sterile 

 branches; leaves scarcely wider than the stem, ascending, con- 

 cave, thickened at the middle, mostly bifid with a somewhat 

 obtuse sinus and incurved segments; involucral leaves appressed, 

 many ranked, bi-trifid, subentire; inner involucre subcharta- 

 ceous, cylindric, complicate upward, the mouth ciliate; capsule 

 oval, cinnamon-colored. (Jimgermania catenulata Hiibn.) 



Hab. On rotten wood in swamps and on the ground, N. Eng. to 

 La.; very common southward. (Eu.) 



Sib. Syn. Hep. p. 138 ; Hep. Europ. p. 92. 

 Exsic. Hep. Bor.-Amer. No. 56. 



6. 0. curvifolia Dumort. Fruit-bearing branch short; 

 stems and sterile branches flexuous, creeping; leaves ascending, 

 nearly orbicular, inflated at the ventral base, lunately 2-cleft, 

 the segments long, linear, inflexed; involucral leaves erect, 2-3- 

 cleft, serrate, imbricate, inner involucre elongate, narrow, the 

 mouth denticulate; capsule oval. (Jungermania curvifolia 

 Dicks., Trigonanthus curvifolius Spruce). 



Hab. Rotten logs in damp woods and swamps ; common. (Eu.) 



Sib. Syn. Hep. p. 142 ; Hep. Europ. p. 93. 



Delin Brit. Jung. t. 1.6. 



Exsic. Muse. Alleghan. No. 242; Hep. Bor.-Amer. No. 60. 



7. C. Macouni Aust. Stems slender, diffusely 

 tose; fruit-bearing branch short; leaves little wider than the 

 stem, subimbricate, somewhat concave at the base, subcuneate- 

 quadrate, bifid to below the middle, the sinus usually broad, 

 obtuse, the segments ovate or triangular-lanceolate, acute, 

 nearly straight, divaricate when pressed; inner involucre mi- 



