28 HANDBOOK OF BRITISH HEPATIC/E. 



Frullania gertnana, Tayl. Trans. Bot. Soc. 

 Edin. II., 45; Ann. Nat. Hist., 1843, l 73'> 

 Gott. and Rab. Exs. No. 475 ; Carr. and Pears. 

 Exs. No. 198. Frullania tamarisci, var. 8 ger- 

 maiia, Carr. Irish Crypt. 



On bark of trees, and on rocks. The plant is 

 3 inches, and sometimes more, in length, and 

 matted into patches sometimes a foot in breadth. 

 It is never so black and shining as Frullania 

 tamarisci. The fertile stems are longer, more 

 branched, and more fastigiate ; whilst those bear- 

 ing perigonia are far narrower, and with shorter 

 branches. The leaves are thin, and do not present 

 the linear mark of enlarged opaque cells as in 

 Frullania tamarisci. The stipules are wider 

 than the stems, and the recurvation of their 

 margin chiefly observable towards the summit. 

 The margins of all the perichaetial leaves are 

 quite entire. The perigonium is a linear spike 

 as in Frullania dilatata. Common and previously 

 confounded with Frullania tamarisci, but readily 

 distinguished when attention is paid to the entire 

 perichaetial leaves, to the linear perigonium, as well 

 as to the lighter colour, and want of lustre in the 

 leaves. — Taylor. (Plate i,ftg. 4.) 



Genus 2. JUBULA, Dumort. 



Involucre bifoliate ; perichaetial leaves op- 

 posite, different in form from the leaves ; 

 perianth compressed, rather triangular, rost- 

 rate and acuminate ; capsule four-valved, 



