LICHENS OF THE ISLE OF MAN. 
COLLECTED IN SEPTEMBER, 1892. 
BY W. H. WILKINSON, F.L.S., F.R.M.S., 
PRESIDENT OP THE BIRMINGHAM NATURAL HISTORY AND MICROSCOPICAL SOCIETY. 
(Concluded from page 248.) 
Thallus Foliaceous or Granulose. 
Plaeodium mUFOFUm (Hoffm.). Bright yellow, closely appressed, radiate at 
cirumference; often broken up into angular masses, and whitish in 
the centre; apothecia orange coloured, with smooth yellow border. 
Spores 8, colourless, oval, with a globule towards each end. On rocks 
on the shore, Peel. 
P. murorum, form lobulatum (Smrft.). Thallus greenish yellow, 
almost obliterated; apothecia crowded and numerous. 
Spores 8, colourless. Albert Tower, Ramsey. 
•01 mm. long. 
P. eitrinum (Ach.). Pale yellow, crustaceous or powdery; apothecia often 
crowded, pale orange, with yellow border. Spores 8, colourless, oval, 
with a globule towards each end. On rocks and walls, Ramsey, Peel, 
Port Erin, Sulby Glen. 
P. elegans (Link.). Dark orange-red; often starlike, with narrow divided 
rays, appressed; apothecia numerous, similar in colour to thallus. 
Spores as the above ; rare. On stone walls, Sulby Glen. 
Thallus Crustaceous. 
Leeanora sareopis (Whlnb.). Thallus greenish grey, 
granular, thin; apothecia small, reddish or 
flesh-coloured. Spores 8, colourless, oval, 
simple, containing globules when immature. 
Spermatia slender, straight or curved ; thallus 
012 mm, long,’ 005 wide. 
-- 7 - O t 
K. yellow, C. red. Rare. On pine trees, Ramsey. 
L. diseolorella (Nyl.). Thallus whitish, granulose, K. faint yellow, C. red ; 
apothecia minute, pale brown, with white border. Spores 8, simple, 
granular, pale brown. ’016 mm. long, ‘008 mm. wide. Hypothecium 
colourless. Rare. On rocks, Ballure Glen, Ramsey. 
L. atra (Huds.). Grey or dirty white; granulose, often forming a thick 
crust on rocks ; apothecia black, in old specimens the border is 
notched and waved. Spores 8, colourless, oval, simple. '012 mm. 
long, ‘006 mm. wide. Paraphyses branched and articulate. Fre¬ 
quent. On rocks on shore, also on trees, Peel, Sulby Glen. 
L. Sllbfusca, form argentata (Ach.). White or grey, thin granular, 
smoothish, often broken by numerous small cracks; apothecia pale 
brown, with broad border. Spores 8, oval, colourless, simple. 
•01 mm. long, ’005 mm. wide, when young 2-nucleolate. On trees, 
Ramsey. 
December, 1893. 
