LECANORA. 



227 



d. Apothecia red. 



8. Lecanora rubra {ruber, red). Thallus whitish, leprose 

 or subcartilaginous, verruculose or granulate-pulverulent. 

 Apothecia from flesh-coloured becoming blood-red, concave ; 

 margin tumid, inflexed, crenulate. 



An elegant species, not very common on trees in some 

 parts of the Highlands, as about Ben Lawers, Perthshire. 



9. Lecanora H^matomma. Thallus pale ochroleucous 

 or whitish, tartareous-farinose. Apothecia innate, at length 

 sessile, crimson or blood-red. 



Not uncommon as a coating of rocks in many localities, 

 lowland and subalpine. It is somewhat frequent in the 

 neighbourhood of Edinburgh, as on Arthur's Seat and North 

 Berwicklaw ; around Perth it occurs on the hills above Kin- 

 fauns, and it incrusts the rocks about the Palls of Moness 

 to such an extent, that Burns alludes to it when he sings in 

 his ' Birks of Aberfeldy/ 



" The hoary cliffs ascend like wa's." 



10. Lecanora ventosa. Thallus pale greenish-yellow, 

 tartareous, verrucose-areolate and pulvinate. Apothecia ap- 

 pressed, blood-red or brownish-red, resting on the thalline 

 warts, frequently irregular in form ; margin thin or thick, 

 pale, entire, often flexuose. (E. B. 906, vars. lecidina and 

 abortiva.) 



