152 LICHENES. [Sticta. 



5. S. limbata, ACH. Thallus coriaceous, suborbicular, glau- 

 cous-brown, the lobes rounded ; the buds submargirial, con- 

 fluent, in a greyish powder; cyphellfe concave, w ite. " Apo- 

 thecia with the disk of a rust colour. Ach.'' Ach L. Un.p. 454. 

 Eng.Bot.t. 1104. 



Near Belfast, Mr. Templeton ; near Bantry, Miss Hutchins. The 

 apothecia of this or of the preceding have never been found in Ireland. 

 Our plant is strongly allied to S. scrobiculata, but at once distin- 

 guished by the characters of the cyphellcR. 



6. S. fuliginosa, ACH. Thallus coriaceous, suborbicular, dark 

 lurid-grey, broadly lobed ; buds in dark-brown, subrotund, ag- 

 gregate grains on the surface ; cyphellcz concave, whitish ; apo- 

 thecia submarginal, concave, reddish-brown, their border sub- 

 crenate. Ach. L. Un. p. 454. Eng. Bot. t. \ 103. 



On rocks and trees common : apothecia on the road side between 

 Kenmare and Killarney, on thallus growing on moss on a rock. The 

 buds extend more over the surface than in any of the preceding, and 

 are of a darker colour. Cyphellae, with a thin somewhat waved or 

 crenate margin. Perithecium thick, giving a ragged border to the apo- 

 thecia, of a paler colour than the disk, which in fresh specimens is of a 

 brownish-orange colour ; the outside of the apothecia have a fringed 

 appearance arising from rootlets or sustentdcula emitted as lanceolate, 

 flattish, incised processes : thus the perithecium although of a different 

 colour from the thallus, and rising out of it as an insulated body, yet is 

 quite analogous in its functions. The portion of the thallus on which 

 the apothfcium rests, viewed from beneath, is coloured exactly as the 

 perithecium. The apothecia seem to prefer the edges of the fronds. 



7. S. sylvatica, ACH. Thallus foliaceous, deeply lobed, 

 dusky, glaucous, the segments somewhat ascending ; buds in 

 minute rough substipitate grains often confluent in lines ; cy- 

 phellcB concave, pale, yellowish-white, their margin lacerous. 

 Apothecia " on marginal segments, vertical, convex, dark-brown. 

 Ach:' Ach L. Un.p. 454. Eng. Bot. 2298. 



On moss on shaded trunks of trees, common. The apothecia have 

 not yet been discovered in Ireland. A pale variety occurs at Black- 

 water Bridge, County of Kerry, with the lacinice of the thallus wide, 

 and bears the same relation to our plant as S. macrophylla does to S. 

 damcBcornis, Ach. 



8. S. ciliata. Thallus foliaceous, minute, dark olive-green 

 when wet, glaucous-grey when dry ; lobes rounded, nearly en- 

 tire, ciliated; buds in dark-grey, minute granulations on the sur- 

 face ; cyphellcB immersed, concave; apothecia unknown. 



On Hypna on the stems of trees in Askew wood, County of Kerry. 

 The lobes scarcely exceed two-tenths of an inch in diameter, and are 

 often much smaller; ascending through the moss,their edges are deflexed, 

 and consequently the outline has a rounded appearance ; ciliated with 

 whitish, rather flat, linear, trices ; entire, yet occasionally a minute, flat 

 process issues suddenly from the edge, on which is borne a circular ci- 

 liate thallodal expansion, being the evolution of a bud. The upper 

 surface is in part rough with contiguous buds. Beneath, the frond has 



