182 HEPATIC^. 



•075 mm., •125-'15 mm. x -125 mm. ; cells '015 mm., -015 mm. x 

 •0175 mm., "02 mm. x '0175 mm., '01 mm. x "0125 mm., '0125 mm. 

 X 015 mm. ; apical cell '02 mm. x '01 mm. ; stipules "1 mm. x 

 •02 mm. at base, "1 mm. x '03 mm., '075 mm. x '025 mm. ; 

 bracts "2 mm. x "125 mm., seg. ^075 mm., '1 mm., -25 mm. x 

 •15 mm. ; bracteole '1 mm. x ^06 mm., seg. "04 mm. 



Hab. — 7. At the mouth and on the roof of an old copper mine 

 between Dolgelly and Tyn-y-Groes, Merionethshire, W.H. Pearson, 

 April 1877. Ehaider Dhu, Tyn-y-Groes, G. A. Holt, July 1882. 

 Mouth of copper mine, near Pistyl Cain, Tyn-y-Groes, C. J. Wild, 

 July 1882. Extremely rare. 



Obs. — " Cejjli. Macounii, Aust., comes near to it, but is of a 

 green colour, stems slender and much branched, leaves subimbri- 

 cate, sinus sometimes lunate, apices of lobes not unguiculate, cells 

 subquadrate, stipules none. Cejjh. diraricata (Sm.) certainly dis- 

 tinct, flowers acrogenous ; leaves distinctly carinate, rarely more 

 than to the |- divided, exunguiculate, cells quadrate, reticulate 

 (not guttulate). It differs essentially from C. divaricata in being 

 still more minute, in the deeply bifid leaves whose narrow seg- 

 ments end in a clawlike apiculus, the guttulate areolation and 

 especially in the cladogenous inflorescence which brings it near 

 to C. Macoimiir — R. Spruce. 



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

 2. Portion of stem x 85. 3-14. Leaves x 85. 15. Leaf with 

 connate stipule x 85. 16. Portion of leaf x 290. 17-23. Stipules 

 X 85. 24, 25. Bracts x 85. 26. Bracteole x 85 (Tyn-;y- 

 Groes, W. H. P., April 1877). 



1 7. Cephalozia Jackii, Lintprkld MjSS. 



Cephcdozia Jackii, Limpi\, MSS. Spruce, On Cephalozia, p. 67 (1882). 



Paroicous, csespitose, eflagelliferous, small, size of Cejj//. 

 divaricata, aero- and cladocarpous, pale green to reddish-green, 

 with the flowering apices often purplish. Stems short, fragile, 

 simple or with few branches, prostrate, radiculose, ends ascending, 

 some branches elongate, with minute leaves. Lower leaves, chiefly 



