446 LICHEXACF.T. [lECAXORA. 



0,003^ mm. thick ; paraphyses thiekish, somewhat jointed, thick- 

 ened and colourless at the apices ; hypothecium colourless ; hyme- 

 nial gelatine bluish, then often wine-red with iodine. — Carroll, 

 Journ. Bot. 1867, p. 255; Cromb. Lich. Brit. p. 50; Leight. Lich. 

 Fl. p. 226, ed. 3, p. 217. — Lecidea alhocarnea Xyl. Flora, 1876, 

 p. 234 (cfr. Flora, 1879, p. 361) ; Cromb. Gre\^Uea, 1876, p. 26 ; 

 Leight. Lich. Fl. ed. 3, p. 2>A:0.—Bnt. Exs. : Cromb. n. 164 ; Larb. 

 Lich. Hb. nos. 97, 133. 



Looks like a Lecidea near L. sphceroides, but is a true Lecanora allied 

 to the preceding species, as shown by the distinct thaUine marofin in very 

 vouno- apothecia (seldom present in herbaria specimens) and by the cha- 

 ra:-ter of the spermogones. It is somewhat variable as to the thallus and 

 apothecia, whence the form and variety that follow. The spores are rarely 

 simple, cr in the same apotheciiim obsoletely 1-septate, so that Nylander 

 vt supra named this state Lecidea albocarnea. The spermogones have 

 the spermatia arcuate, thin, 0,014-22 mm. long, scarcely 0,001 mm. 

 thick. 



Hab. On schistose rocks and walls in maritime and upland districts. — 

 Distr. Local, though at times plentiful in the Channel Islands, S.W. 

 Eno-laud S. Wales, S.W. and N.W. Ireland. — B. M. : Near Eozel, Island 

 of Jersey : Moulin Huet Bay, Island of Guernsey. St. John's, Devon- 

 port, S. Devon : near Penzance, Cornwall ; Goodwick Bay, Pembroke- 

 shire. Derryquin, Killarney, co. Kerry; near Kylemore and Dough- 

 rua'j'h mts., Connemara, co. Galway. 



Form bellissima Leight. Lich. Fl. ed. 3 (1879), p. 217. — Thallus 

 thiimish, subgranulate. Apothecia rather small, usually congregate, 

 pale-rosaceous, slightly pruinose ; spores rarely simple. — Brit. Exs. : 

 'Larb. Lich. Hb. n. 97. 



Differs in the more granulose thallus and the colour of the apothecia, 

 which occur for the most part in small, more or less scattered groups. It 

 is apparentlv the same as form conc/regaliUs Nyl. Flora, 1879, p. 361, 

 Cromb. Grevillea, viii. p. 114, judging from the typical specimen seen of 

 the latter. 



Hab. On shady walls in a maritime district. — Distr. Very scarce in 

 N.W. Ireland. — fe. M. : Cleghan, near Kylemore, co, Galway. 



Yar. /3. accessitans Xyl. Flora, 1879, p. 361.— Thallus very thin, 

 leprose or subevancscent. Apothecia convex, immarginate; spores 

 usually simple. — Cromb. Grevillea, xviii. p. 69. — Lecidea accessitans 

 Xvl. Flora, 1876, p. 306 ; Cromb. Grevillea, 1876, p. 26 ; Leight. 

 Lich. Fl. ed. 3, p. 2Q0.— Brit. Exs. : Larb. Lich. Hb. n. 224. 



Characterized bv the less developed thallus, which in the specimens 

 a.en is scarcely visible, and by thp spores being most frequently simple 

 (not definitely l-septate). 



Hah. On shadv rocks in a maritime district.— D^^f^r. Only sparingly in 

 N.W. Ireland. — B. M. : Near Renvyle, Connemara, co. Galway. 



137. L. umhraticula Nyl. Flora, 1879, p. 205.— Thallus effuse, 

 thin, subleprose. greenish (K — , CaCl — ). Apothecia small, some- 



