64 HEPATIC^. 



7. Eocks below Llyn OgweD, Carnarvonshire, Dr. Carrington 

 and W. IT. P. 12. Rostliwaite, Cumberland, Dr. Carrington and 

 W. H. P. Seathwaite, Cumberland, /. R. Bijrom and W. H. P. 16. 

 Moidart, West Inverness, S. M. Macvicar. I. Cromaglown, Dr. 

 Taylor, Dr. Spruce, Dr. Carrington, Dr. Moore, Prof. Lindberg, 

 and others. Glenariff, Co. Antrim, Revs. Lett and Waddell. 



Obs. — This is one of the smallest and most beautiful of the 

 British Hepaticae ; single plants being scarcely visible to the 

 naked eye. From Lej. minutissima (Sm.), which is also without 

 stipules, it is distinguished by its more distant, spreading, 

 narrower leaves, which are also more papillose and pellucid. 



Lej. catcarea, Libert, and Lej. Rossettiana, Massal., are larger, 

 coarser species, with more erect leaves, which are distinctly 

 echinate. 



From all other British LejeunecB it is distinguished by the 

 absence of stipules. 



Description of Plate XIX. — Fig. 1. Plants natural size. 2. 

 Portion of stem, antical view x 85 (Rocks, Ogwen, W. H. P.) 3. 

 Ditto, postical view x 64 (ditto). 4, 5. Leaves, postical view x 85 

 (ditto). 6. Leaf (ditto) x 64 (Herb. Tayl.). 7, 8. Leaves, 

 antical view x 64 (ditto). 9. Keel of leaf x 290 (Seathwaite, 

 W. H. P.) 10, 11. Portions of leaf x 290 (ditto). 12. Bract 

 X 64 (Glenariff, Lett & Waddell). 13. Perianth x 64 (ditto). 



14. Lejeunea calyptrifolia {Hook.), Dum. 



Jungermania calyptrifolia, Hook. Brit. Jung. t. 43 (1816). 

 Lejeunea calyptrifolia, Dum: Comm. p. Ill (1822). 

 Colura calyptrifolia, Dum. Recueil, p. 12 (1835). 



Dioicous (?), csespitulose, minute, pale yellowish-green. Stems 

 creeping, slightly and irregularly branched, branches procumbent 

 or suberect ; filiform, flexuose ; radiculose, rootlets extremely 

 minute, pellucid. Leaves closely placed, bifarious, horizontal, 

 patent or erect, largest at the base of the plant, gradually 

 lessening to the apex, unequally bilobed, antical lobe calyptri- 

 form, rostrate corniculate, apex incurved and acute, narrowed at 

 the base, but with a semi-orbicular or broadly oval convolute 



