HANDBOOK OF BRITISH HEPATIC^E. 231 



234, 469; Carr. and Pears. Exs. No. 100 ; 

 Cooke Hep. f. 61. Aplozia hyalina, Dum. 

 Hep. Eur. p. 58. Nardia hyalina, Spruce 

 Hep. Amaz. p. 519. 



On moist argillaceous rocks. (Fr. Early Sum.) 

 Forming more or less dense, depressed tufts, on 

 wet slaty rocks, or mixed with bog moss. Shoots 

 to I inch long, 

 procumbent, 

 densely rooting, 

 simple or inno- 

 vant. Branches 

 springing from 

 axils of the in- 

 volucral leaves, 

 or from the ven- 

 tral side of the 

 stem. Rootlets 

 pale claret colour. I ^ ' 



Leaves semi-vertical, roundish, broad,and obliquely 

 decurrent at the base, plane and nearly horizontal 

 (fig. 158), except on upper part of the stem. Margin 

 entire, a little inflexed. Texture thin, pale glaucous 

 green. Inflorescence autoicous or dioicous. Fructi- 

 fication terminal. Involucral leaves larger than the 

 rest, sometimes emarginate, closely investing the 

 perianth. One or two amphigastria adnate with the 

 bases of the involucral leaves, absent elsewhere ; 

 capsule globose, dark brown, shining. Spores 

 round, yellowish-brown, H-IS/*. Elaters bispiral. 

 Andraecium on distinct shoots, or on special 

 branches on the ventral surface of fertile shoots. 

 Perigonial leaves smaller. Antheridia two or three 

 together, axillary, deep green. 



