460 HEPATIC^. 



1. Metzgeria pubescens [Schrcutk). 



Jioigermania pubescens, Schrank, Prim. fl. Germ. 1, p. 231, n. 860, excl. synon. 



(1792), Hook. Brit. Jung. p. 20, n. 79 (1816). 

 Metzgeria pubescens, Radd. in Act. Soc. Modena, 18, p. 40 (1818). 



Dioicous, in flat patches, medium size, pale glaucous green in 

 colour. Fronds closely imbricate, horizontal, alternately pinnate 

 or sub-decompound, branches short, linear, of uniform width, flat, 

 apices obtuse ; margins undulate, uniformly and densely villose 

 on the antical and postical sides ; the hairs on the postical side 

 longer, single, or many at the margin double or in threes, 

 irregularly curved, without sucker-like branches at the apex ; 

 midrib projecting on the antical and postical side, 8-12 cells 

 tliick X 10-14 cells broad, showing scarcely any cortical 

 cells ; texture delicate, cells smallish, 5-6 angled. Perichsetial 

 bracts situated on the postical side of midrib near margin, 

 densely villose, pistillidia 2-10. Androecia numerous, on the 

 postical side of midrib ; antheridia 5-9, subglobose, shghtly 

 stipitate. 



Only imperfect female flowers have yet been met with. 



Dimensions. — Fronds 1-1 j- inch long, '2. mm. broad ; cells 

 •0225--0285 mm. 



Hab. — On rocks and stones, or creeping amongst mosses, 

 rarely on trees, in limestone districts. Moderately common. 



5. Eocks about Thor's Cave, Robert Gamer; Dove Dale, 

 Staffordshire, J. E. Bagnall, W. H. P. 7, 8, 9. Easegill, near 

 Leek ; Over Kellet, A. Wilson ; Silverdale, Lane, /. A. Wheldon- 

 10, 11, 12. On an old tree-stump, Barrow Field, near Kendal; 

 Deep Grhyll, Mallerstang ; on shady rocks near the bridge, Kirkby 

 Stephen ; on Stainmoor, near Barras ; in a shady ghyll at the 

 village of Dent, Westmorland, G, Stabler. 13. Penton Linns, 

 Charles Scott. 15. Ben Lawers, ascending to top, S. M. Macvicar. 

 16. Lismore, Argyll, S. M. Macvicar. 



I. Mountains near Belfast, Mr. Tenq^letoii ; on limestone rocks 

 between Larne and Glenarm, and at Sillaghbraes, near Larne, 

 Br. D. Moore, S. A. Stewart. 



