286 LICHENACEI. [NEPHROSIIl'M. 



Applecross, Ross-shire. Fairhead, co. Antrim ; Luggelaw, co. Wicklow ; 

 Killarney, co. Kerry; Derryclare, Connemara, co. Galway. 



Form panniforme Cromb. Grevillea, xv. (1887) p. 77. Thallus 

 lobulato-dissected, closely imbricate, the lobules small, crowded, 

 beneath dark-brown. Apothecia small. 



Has the appearance of other pannifortn conditions of foliaceous lichens. 

 The apothecia, which in the specimens seen are with one exception very 

 sparingly present, are small and confined to the larger lobules. 



Hab. On the mossy trunks of trees, and on boulders in maritime and 

 upland districts. Distr. Lo^al and scarce in S.AV. England and the W. 

 Highlands of Scotland. B. M. : Near Penzance, Cornwall. Barcaldine, 

 Argyleshire ; Glen Lochay, Perthshire ; by Loch Linnhe, Inverness-shire. 



j3. Hibernicum JN'yl. ex Leight. Lich. Fl. ed. 3 (1879) p. 100. 

 Thallus with the medulla white (K + purplish). Apothecia with the 

 back of the receptacle smoothish. Otherwise as in the type. 



A very distinct variety, it' not subspecies, characterized by the white 

 or whitish medulla, in which respect it resembles N. leeoigatum. The 

 chemical reaction, however, shows it to belong to N, lusitanicum. In the 

 specimens seen the apothecia have the back of the receptacle smooth or 

 subsmooth ; though as this occurs also in younger and muscicole states of 

 the type, it can scarcely be regarded as of diagnostic value. 



Hab. On the trunks of old trees among mosses on rocks in maritime 

 tracts. Distr. Local and scarce in W. England, the W. Highlands of 

 Scotland, and N.VV. Ireland. B. M. : Near Walkingham, Devonshire; 

 Launceston, Cornwall ; near Douglas, Isle of Man. Barcaldine, Argyle- 

 shire ; by Loch Linnhe, Inverness-shire. Doughbruagh Mts., co. Galway. 



52. PELTIGrERA Hoffni. Deutsch. Fl. ii. (1795) p. 106 pro parte; 

 Nyl. emend. Flora, 1866, p. 116. 

 Thallus fragile, opaque or somewhat 

 shining, the cortical layer not conti- 

 nuous on the under surface, which is 

 generally nerved ; gonidial layer 

 composed of gonimia. Apothecia 

 adnate on the front margin of the 

 thalline lobules, ascending or hori- 

 zontal ; spores (6-)8tuc, 3- or pluri- 

 septate, fusiform, colourless ; hyrne- 

 nial gelatine bluish with iodine. 

 Spermogones not known. 



As previously observed, this is well 



separated from Peltidea, by the goni- Peltigera canina, Hoffm. a. A syn- 

 imose and ecephalodiiferous thallus. gonimium, x350. b. Free goni- 

 From the preceding it is distinguished iuia,x350. c. Spores, xoOO. 

 bv the cortical layer not being conti- 

 nuous beneath, and by the position of the apothecia. The rhizinse also, 

 when present, are composed of fasciculate filaments. All the European 

 species occur in our Islands, and for the most part in considerable quantity. 



