152 HEPATIC^. 



X 1' mm., seg. "75 mm. ; bracteole 1"25 mm. x 1* mm., seg. 

 •6 mm. ; perianth 2* mm., x -75 mm., 2*5 mm. x '85 mm., 35 mm. 

 X r mm., 1'8 mm.-2*2 mm. x "o mm.; teeth at mouth '05 mm., 

 •075 mm.,*l mm. ; pistillidia "15 mm. x "04 mm. ; perigonial bracts 

 "75 mm. x "5 mm., seg. "4 mm., '6 mm. x '6 mm., seg. '25 mm. ; 

 antheridia '125 mm. x "l mm. 



Hab. — Growing on damp stones, rocks, and earth, or amongst 

 mosses in wet and shady places; rarer on rotting wood. Common. 



1 to 17. I. 



Found on the Continent and in North America. 



Obs.^ — One of our commonest hepatics, varying extremely in 

 size, colour and habit. 



Distinguished from C. connivens (D.), which is also monoicous, 

 by the presence of flagella; position, shape and texture of the 

 leaves, and perianth not furnished with long cilia. 



C. mrvifoUa (Dicks.), which is also monoicous, has no flagella; 

 the leaves are remarkably concave, with long, incurved, hamate, 

 cuspidate segments, and usually of a beautiful purple colour. 



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

 2. Portion of stem x 31 (Pass of Llanberis, G. K. Holt). 3. Ditto 

 X 31 (Penzance, W. Curnow). 4. Leaf x 24 (Kinder Scout, 

 Whitehead & Holt). 5, 6. Leaves x 24 (Tyn-y-Groes,W. H. P.). 

 7. Portion of leaf x 290 (ditto). 8, 9. Bracts x 24 (Pass of 

 Llanberis, G. A. Holt). 10. Bracteole x 24 (ditto). 11. Sub- 

 bract x 24 (ditto). 12. Bract x 24 (Kinder Scout, Whitehead 

 & Holt). 13. Perianth x 16 (Festiniog, W. H. P.) 14. Cross- 

 section of perianth X 16 (ditto). 15. Portion of the mouth of 

 perianth x 85 (ditto). 16, 17. Perigonial bracts x 24 (ditto). 

 18. Antheridium x 85 (ditto). 



