HANDBOOK OF BRITISH HEPATKVE. 37 



Spruce, in Trans. Bot. Edin., Vol. III., p. 212, 

 decided that the Jungermannia minutissima of 

 English Botany and of Hooker's pi. 52, belonged 

 to L. ulicina Tayl., and that the Jungermannia 

 minutissima Tayl. s-hould be called Lejeunia 

 Taylori Spruce. Since then his opinion changed, 

 and he refers the English Botany figure to his 

 Lejeunia Taylori, otherwise Lejeunia inconspicua 

 Raddi. 



Lejeunia Rossettiana, Mass. 



Stems subdichotomous, minute ; leaves im- 

 bricate, patent, ovate, acuminate, denticulate, 

 externally echinate ; lobule one-third smaller, 

 subrotund, dentate, spinulose ; stipules none ; 

 perianth projecting more than half beyond the 

 bracts, muricate, obtusely pentagonal. 



Lejeunia (Cololejeunea) Rossettiana, Mass. 

 Nuov. Giorn. Bot. Ital. XXL, 487 ; Carr. and 

 Pears. Exs. No. 276, 277; Journ. Bot., Dec., 

 1889, t. 292. 



On limestone rocks. 



Amongst moss, dioicous, minute, growing in 

 closely matted tufts of a yellowish-green colour, 

 often in company with L. calcarea, which it re- 

 sembles in size and habit. Stems dichotomous, 

 rootlets pale, from the base of each leaf, or obso- 

 lete. Leaves imbricate, spreading, somewhat con- 

 vex, ovate, apices more or less acuminate, margin 

 denticulate, exterior surface echinate, lobule one- 



