BRITISH HEPATICtE. 



TRIBE L— JUNGERMANNIDEiE. 



Sporangium solitary, quadrivalved, rarely with more numerous 

 valves, or opening irregularly. Elaters mingled with spores. 



STJB-TEIBE A.— P O L I O S iB. 



Fronds clothed with distinct leaves. 



* Leaves succuhous. 



Section I.— HaplomitrieSD. 



Tructification terminal, gynomitrious, Oolesule wanting. Ca- 

 lyptra completely enclosing the sporangium, much longer than 

 the involucral bracts. Pronds ascending, rhizomatous. Leaves 

 trifarious. 



I. ScALiTJS, Gr. 8r B. 



Jimgernumnia, Lyell, in Eng. Bot. t. 2555 (1813). 

 Scalius, Gray & Bennett, Nat. Arr. Brit. PL p. 704 (1821). 

 .Mniopsis, Dum. Comm. Bot. p. 114 (1823) ; Syll. Jung. p. 75, n. xiv. (1831). 

 Lejennia, Spreg. in L. Syst. Veg. 16 ed. iv. p. 234 (1827). 

 ffyrrmomitrium, Corda, in Opiz. Beitr. i. p. 651, n. 1 (1829). 

 Haplomitrium, N. ab E. Eur. Leberm. i. p. 98 et 109 (1833); Gottsche de 

 Haplomit. N. Act. Ac. Nat. Cur. xx. i. p. 265, sqq. c. t. 8. 



Dioicous. Cblesule wanting. Calyptra longer than the invo- 

 lucral bracts, chartaceous. Capsule oblong, 2-4-valved, elaters 

 persistent, apical. 



Obs. — " /ScaKcJ, Sims, Bot Mag. xxiv. t. 956 (1806), and Po(?o?e^is were published 

 in the same year, and are synonyms {vide Benth. & Hook., Gen. PI. ii. p. 1). But 

 since Podolepis has been accepted by all authors, Scalia is free for use amongst the 

 Hepaticse." — Dr. Lindherg in Sched. 



There is also some doubt -whether Mniopsis, Mart., Nov. Gen. Sp. Braz. i. p. 3, 

 t. 1 J and Mniopsis, Dumokt., were not published in the same year.. 



Although, for the sake of convenience, I have arranged Scalius near the Gym/no- 

 mitrece, its true affinity seems to be with the Codoniem. 



In the irregular form and lax texture of the leaves, the axillary development of 

 the pistillidia, and the exposed antheridia, it approaches Fossombronia. Again, in the 



B 



