424 Mr, Hardy on Lichens of the Eastern Borders. 



tufa at Spindleston. B. Common on rocks on the sea-banks ; and in many 

 of our deans, and by water sides. 



(3. MACROSTOMA, Duf. B. On a stone-wall near Siccar-point. 



10. V. VIRIDULA, Schrad. On old mortar on walls. N. On lime-coped walls 

 near Wooler, and at Spindleston. B. On walls at Greenheugh, at Penmanshiel, 

 Retreat, &c. 



A Verrucaria, like this, with a fine bright green tessellated crust, with the 

 apothecia minute, innate, almost immersed, grows on calcareous spar below 

 Humbleton Linn, and is perhaps a distinct species. 



11. V. OCHROSTOMA, Borr. N. On sandstone in the walls of Bamborough 

 Castle. 



12. V. RUPESTRis, S'c/jrtfi. On rocks containing lime. N. On calcareous 

 veins in porphyry. Humbleton dean ; on limestone near Bamborough. D. 

 Limestone near Hudshead. B. Veins of calcareous spar, Lumsden shore ; be- 

 low the " Deil's Dander," Coldingham ; sandstone and conglomerate, Green- 

 heugh. 



(3. SUBALBICANS, Leiglit. On mortar coping stone-walls, frequent, N. and B. 



13. V. MUTABiLis, Borr. B. On stones in pasture fields at Penmanshiel, 

 &c., common. Miss Atwood sends me an acrustaceous Verrucaria, under this 

 name, from slate, Cardiganshire, with the apothecia larger, having a spreading 

 base, the apex papillate. This form with us accompanies trachona in shady 

 places. I find it among the rocks on Care-burn, and on slate in Penmanshiel 

 and Blackburn-rigg Woods. It is perhaps the form V. acrotclla, Smith. 



14. V. EtiGjEA, Ach, B. " Dry barren banks, near Berwick, rare." Dr. 

 Johnston. Sea banks between Redheugh and Dowlaw ; on a wall-top, Bowshiel 

 dean ; road-sides in Penmanshiel Wood, and on the Railway banks near Cock- 

 burnspath Tower dean. 



73. TMidium, iTfassa/. 



1. T. IMMERSUM, Lei^/i^ N. On limestone at Ratcheugh ; calcareous spar 

 at Humbleton Mill ; and calcareous tufa and mortar, at Spindleston. It forms 

 deep holes in the rock on which it grows. There is an excellent description of 

 this species in the Rev. W. A. Leighton's British Angiocarpous Lichens, p. 58. 



2. T. coNoiDEUM, Fries. N. On veins of calcareous spar in porphyry in the 

 dean above Humbleton Mill. B. On red sandstone above Swallow Craig on the 

 sea-banks near Siccar point. Rare. 



3. T. GEMiNATUM, Ach. B. On the scales of the bark of old Scotch pines, 

 Retreat ; and about the roots of old oaks. Pease dean ; rare. 



4. T. BIFORME, Borr. On the trunks of trees, common, N. and B. 



5. T. EPiPOLYTROPUM, Mudd. N. Parasitic on the thallus of Lecanora poly- 

 tropa, on Cheviot. It is very like a small black parasite on the thallus and 

 apothecia of Lecanora subfusca, not uncommon in Berwickshire ; but Dr. Lind- 

 say regards this as a fungus. 



74. Artliopyreiiia, Massal 



1. A. MACULARis, Wallr. On stones in damp shady deans. N. Stones by 

 the side of the Lill-burn. B. On stones in Brockholes dean. 



3. CODONOIDEA, Leiglit. On stones among damp rocks. N. On porphyry 



