&6 B^PATIC^. 



•5 mm., 1* mm. X "6 mm., segments "5 mm., l"! mm. x 6 mm., seg- 

 ments '5 mm. ; bracteole '65 mm. x '4 mm., segments "3 mm., "6 mm. 

 X "5 mm., segments '25 mm. ; perianth 2' mm. x 1* mm., 1-75 mm- 

 X 75 mm., segments '25 mm., '4 mm. ; capsule '5 mm. x 'b mm., 

 valves '6 mm. x '3 mm., pedicel 4* mm. x "3 mm. ; spores '015 mm- 

 diameter, elaters *15 mm. x '01 mm. ; perigonial bracts -6 mm. x 

 •4 mm., segments '3 mm. 



Hab. — Grrowing on moist exposed or shaded rocks in large 

 cushion-like tufts in alpine or subalpine localities. 



Moderately common, somewhat rare in fruit. 



1, 7, 10 to 13, 15, 17. I. 



Found on the Continent and in Greenland. 



Obs. — This is one of the commonest hepatics met with, when 

 a certain altitude is attained, often growing in large densely 

 tufted cushions of a silvery lustre ; the stems are so intricately 

 entangled that they are difficult to separate. 



Distinguished at a glance from Cesia concmnata (Dicks.) and 

 Cesia obtusa (Lindb.) by growing in damper situations and the 

 larger size of tufts ; stems longer, more rigid and filiform ; more 

 closely examined, leaves tristichous, narrower, deepty bilobed, seg- 

 ments acuminate, presence of true and deeply plicate perianth. 



From Anthelia Jiiratzkana (Limpr.) see following notes. 



In " Eng. Bot. " 1024 the leaves of this species are figured 

 wrongly as if entire, and in Hooker's " Brit. Jung. " the bracts 

 are described and figured as quadrifid, which is also incorrect. 



Description of Plate XXXIV. — Fig. 1, Plants natural size. 

 2. Plant X 11 (Lyn Cwm, W. Wilson). 3-7. Leaves x 24 

 (Mangerton, Stewart and Holt). 8. Branch leaf x 85 (Meal na 

 Ptargnachan, C. J. Wild). 9. Portion of leaf x 290 (Mangerton, 

 Stewart and Holt). 10. Sub-bract x 24 (Lyn Cwm, Wilson). 

 11-13. Bracts x 24 (ditto). 14-16. Ditto x 24 (Mangerton, 

 Stewart and Holt). 17, 18. Bracteoles x 24 (ditto). 19. 

 Perianth x 16 (ditto). 20. Portion of the mouth of perianth x 85 

 (Lyn Cwm, Wilson). 21, 22. Perigonial bracts x 24 (ditto). 



