LEUCODOK, 217 



subacuniinated, concave, their margins recurved, serrated; 

 nerve single or forked, short, faint; lid conical. — Etig. FL 

 p. 70; MiUL Spi.pt. 2. p. 90. 



On rocks and trunks of trees in the mountainous districts 

 of Scotland and Ireland. Plentiful on Ben Lawers and 

 other Breadalbane mountains. Er. Spring and Summer. 

 A smaller species than the preceding, which it resembles in 

 having the foliage arranged in an imbricating and subsecund 

 manner. From the larger cellules of the leaves, which give 

 an inequality to their surface, there is a rough or papillose 

 appearance given to the whole plant, which distinguishes it 

 at once from P.Jili/brme. 



LEUCODON, Schwmjr. (Leucodon.) 



So named from the white teeth of the peristome in 

 the only British species, the one on which tlie genus was 

 founded. 



Generic Character. — Seta lateral. Peristome single, of tliirty- 

 two teeth, closely united in pairs. 



1. Leucodon sciuroides, Schwfegr. {Squirrel-tail Leu- 

 codon^ Leaves closely imbricated, ovato-cordate, acumi- 



