394 LICHENACEI. [LECANORA. 



59. L. spodomela Nyl. Flora, 1876, p. 572, 1886, p. 101. 

 Thallus effuse, thin, opaque, subleprose, rimoso-diffract, greyish- 

 brown (K , CaCl-). Apothecia small, blackish, the thalline 

 margin subentire; spores ellipsoid, usually 1-septate, 0,011-16 mm. 

 long, 0,006-7 mm. thick ; paraphyses slender, brown at the clavate 

 apices ; hymenial gelatine bluish, then violet, with iodine. Cronib. 

 Grevillea, v. p. 106 ; Leight. Lich. Fl. ed. 3, p. 221. 



A peculiar plant having the aspect of some ally of L. sopJiodcs. In 

 the two specimens seen the thallus is rather scattered and little visible, 

 being overrun by a foreign plant, but the apothecia are frequent. 



Hob. On sandstone rocks in maritime tracts. Distr. Local and scarce 

 in N.W. Ireland. B. M. : Killery Bay and Kylemore Lake, Connemara, 

 co. Galway. 



C. Apothecia lecanorine or sublecideine : spores Snoe, very rarely 

 16-24nae, ellipsoid, 1- very rarely 3- 

 septate, brown or blackish, often 2- ^' 



nucleolate ; hymenial gelatine bluish 

 with iodine. Spermogones with jointed 

 sterigmata and moderate, straight sper- 

 matia. (Rinodina Stiz. Beitr. Flecht. 

 (1862) p. 169.) 



60. L. sophodes Ach. Lich. Univ. (1810) 

 p. 356. Thallus determinate or subdeter- 

 minate, granulate or granulato-arcolate, 

 moderate or thinnish, olive- or greyish- 

 brown (K , CaCl-); hypothallus thin, 

 blackish, limiting the thallus. Apothecia 

 small, plane, usually crowded, brownish- spermatia, x500. 

 black, the thalline margin entire; spores, 

 0,012-20 mm. long, 0,006-8 mm. thick. Cromb. Grevillea, xviii. 

 p. 46 ; Gray, Nat. Arr. i. p. 450 pro parte ; Sm. Eng. Fl. v. p. 188 

 pro parte ; Cromb. Lich. Brit. p. 49 pro parte ; Leight. Lich. Fl. 

 p. 224 pro parte, ed. 3, p. 314 pro parte. Lichen sophodes Ach. 

 Prodr. (1798) p. 67. Rinodina exigua y. AortzaKoerb. Mudd,Man. 

 p. 143. Brit. Exs. : Mudd, n. 109. 



Usually not rightly separated by authors from L. exiyua and L. 

 robot-is. The thallus is generally small, macular, thin, distinctly limited 

 by the hypothallus, rarely thickish and more expanded. It is always well 

 fertile, the apothecia being chiefly central and becoming angulose from 

 mutual pressure. 



Hab. On trunks of trees, especially ash, in wooded maritime and upland 

 tracts. Distr. Local and scarce in S., W., and N. England, and in S. 

 Wales. B. M. : New Forest, Hampshire ; near Anstey's Cove, Torquay, 

 S. Devon ; Kemble, Wilts ; Donat, Glamorganshire ; Ayton, Cleveland, 

 Yorkshire. 



Var. /3. malangica Cromb. Grevillea, xviii. (1889) p. 46. 

 Thallus effuse, rimuloso-diffract, dark olive-green or blackish, fur- 



