102 Illinois State Laboratory of Natural History. 



12. J. hyalina Lyell. Stems creeping, strongly radicu- 

 lose, branching, at length dichotomous-fastigiate, ascending; 

 leaves semi vertical, subrotund, repand and undulate, divergent- 

 ascending; involucral leaves like those of the branches, ap- 

 pressed; inner involucre little exserted, ovate, acute, the apex 

 plicate, the mouth somewhat 4-cleft; capsule globose. (Aplo- 

 zia hyalina Dumort.) 



Hob. On banks in woods; Closter, N. J. ( Austin) t O. (Lesquereux) . 

 (Eli.) 



Bib. Syn. Hep. p. 92; Hep. Europ. p. 58. 

 Delin. Brit. Jung. t. 63 ; Ekart, t. VI, f. 45. 

 Exsic. Hep. Bor.-Amer. No. 28. 



13. J. biformis Aust. Stems densely caespitose, inno- 

 vating from beneath, much branched, strongly radiculose; 

 leaves of the stem scarcely imbricate, somewhat flattened, 

 obliquely semicircular or broadly ovate, the dorsal margin de- 

 current, the apex retuse or entire, the areolation large, hyaline ; 

 leaves of the branches a half smaller, ovate or obovate, very 

 obtuse, scarcely decurrent ; sporogony phase unknown. (South- 

 by a biformis Aust.) 



Hob. On steep wet rocks ; Delaware Water Gap, N. J. (Austin). 

 Bib. Pro. Phil. Acad. 1869, p. 220 ; Torrey Bull. VI, p. 85. 

 Exsic. Hep. Bor.-Amer. No. 26. 



14. J. sphserocarpa Hook. Stems creeping, ascending 

 at the apex, subsimple, greenish ; leaves semivertical, somewhat 

 rigid, orbicular, obliquely spreading, decurrent dorsally at the 

 base, pale-green; involucral leaves discrete; inner involucre 

 exserted, obovate-oblong, the mouth 4-cleft; capsule spherical. 

 (Aplozia splicerocarpa Dumort.) 



Hob Mts. of N. Eng. (Austin) ; rare. (Eu.) 

 Bib. Syn. Hep. p. 93 ; Hep. Europ. p. 61. 

 Delin. Brit. Jung. t. 74; Ekart, t. Ill, f. 20. 

 Exsic Hep. Bor.-Amer. No. 29, 29b. 



15. J. cordifolia Hook. Stems erect, fastigiately 

 branching; leaves very lax, ovate, subrotund, not margined, 

 erect, broadly clasping, dingy brown; involucral leaves dis- 

 crete; inner involucre exserted, oblong, smoothish, the mouth 

 minutely denticulate; capsule oval. (Aplozia cordifolia Du- 

 mort.) 



