12G HEPATIC.^:. 



One form (near Festiniog, Dr. C. and IF. H. I*., and Killarney, 

 H. 0. L.) is larger, more regularly pinnate, of a softer texture 

 with tlie bracts hardly so laciniate as the usual form, but I have 

 observed no other characters to separate it from the type. 



Dr. Spruce found on Strensal Moor a stout and often fertile 

 form which has leaves mostly 4-cleft, although in laxer forms of 

 the species, leaves with more than 3 divisions are rare. 



The perfect fruit of this species is very rare. 



Description of Plate XLVI. — Fig. 1. Plants natural size 

 Portion of stem, antical view x 24 (Killarney, S. 0. Lindberg) 

 3. Ditto, postical view x 85, showing stipules (ditto). 4, 5 

 Leaves x 85 (ditto). G, 7. Leaves x 85 (Barton Moss, Lane. 

 W. H. P.). 8. Leaf x 85 (Aust. Hep. Am. Bor. n. 76). 9, 10. 

 Branch leaves x 85 (Killarney, S. 0. L.). 11. Branch leaf x 85 

 (Barton Moss, W. H. P.). 12. Portion of leaf x 290 (ditto). 

 13, 14. Bracts x 64 (White Mts., N. America, Gates). 15. 

 Bracteole x 64 (ditto). 16. Sub-bract x 64 (ditto). 17. Sub- 

 brac^eole x 64 (ditto). 18. Perianth x 31 (ditto). 19. Portion 

 of the mouth of the perianth x 85 (Tyn-y-Groes, N. Wales, 

 W. H. P.). 20. Capsule and calyptra x 31 (White Mts., 

 Oakes). 21 Perigonial bract x 85 (Aust. Hep. Am. bor., n. 7Q). 

 22, 23. Ditto X 64 (Sussex, Gr. Davies). 24. Perigonial bracteole 

 X 64 (ditto). 25. Antheridium x 85 (ditto). 



Genus 12. BAZZANIA, Gr. ^^ B. 



Jnngermania, Linn. FJ. Suec. ed. 1, p. .'5;5.") (174;")). 



Bazzatiia, Gr. & Benn. Nat. Arr. Brit. PI. 1, p. 704 (1S21). 



Pleuroschisma, sect. Pleuroschismotypus, Duni. Syll. Jung., p. 70 (1S;51). 



Pleuroschisma, Dum. Recueil, p. 1!) (ISoS). 



Berpetium, Nees, Nat. Hist. Eur. Leberm., Ill, p. 214 (1838). 



Masiigobri/um, G.Jj.^. Syn. Hep. p. 214 (1845). 



Stems firm, almost round, slightly compressed frontally, 

 repeatedly furcate, dichotomous. Branches postical, very short 

 and floriferous, or often elongate, microphyllous and radiculose. 

 Cells of the stem several layers, cortical similar to the inner ones, 

 opaque. Leaves incubous, alternate, in a few species opposite, at 

 the base more or less imbricate, apex more or less distant, decurved, 



