LECANOBA.] LECANO-LECIDERT. 447 



what plane, biatoroid, fleshy-yellow or subyellowish, colourless 

 within ; paraphyses submoderate ; epithecium colourless ; spores 

 fusiform, simple, or at times thinly 1-septate, 0,008-16 mm. long, 



0,002-3 mm. thick ; hymenial gelatine wine-reddish with iodine. 



Cromb. Grevillea, viii. p. 28. 



Allied to var. /3 of the preceding^ species, but differs in the thallus and 

 the thinner spores, the form of which Xylander says are as in Lecidea 

 f/lobulosa. The single fragmentary specimen seen is -well fertile. The 

 spermogones have the spermatia 0,014-19 mm. long, 0,0005 mm. thick. 



Hab. On shady calcareous rocks in a maritime district. Distr. Ex- 

 tremely local and scarce in N.W. Ireland. B. M. : Kylemore, Connemara, 

 co. Galway. 



138. L. spodophaeiza Nyl. Flora, 1873, p. 290. Thallus deter- 

 minate, moderate, granuloso-verrucose, greyish, thinly white-fim- 

 briate at the extreme circumference (K , CaCl ) Apothecia 

 small, somewhat plane, badio-reddish, the thalline margin suhentire ; 

 spores oblong or fusiformi-oblong, simple or often spuriously 1-septate, 

 0,009-18 mm. long, 0,004-6 mm. thick ; epithecium pale-brownish ; 

 hymenial gelatine pale-bluish, then wine-coloured with iodine. 

 Cromb. Grevillea, ii. p. 89 ; Leight. Lich. Fl. ed. 3, p. 220. 



Has much the appearance of a young state of L. poliophcea. In the 

 specimens seen the thallus occurs chiefly in small patches, which at times 

 become more or less confluent. The apothecia are only sparingly present, 

 with the thalline margin persistent and scarcely prominent except in a 

 voung condition. The spermogones have the spermatia 0,018-25 mm. 

 long, scarcely 0,0005 mm. thick. 



Hab. On granite maritime rocks. Distr. Confined to one of the 

 Channel Islands, and there very sparingly. B. M. : Mont Orgueil, Island 

 of Jersey. 



139. L. actsea Syl. Flora, 1873, p. 290. Thallus determinate, 

 moderate or thinnish, unequal, rimoso-diffract, greyish-leaden- 

 coloured, bluish and thinly white-fimbriate at the circumference 

 (K , CaCl ). Apothecia small, somewhat prominent, at length 

 convex, biatorine, blackish ; spores ellipsoid or subfusiform, 1-sep- 

 tate, 0,012-14 mm. long, 0,0045 mm. thick ; epithecium dark bluish ; 

 paraphyses thickish, jointed ; hymenial gelatine bluish (the theca? at 

 length violet) with iodine. Cromb. Grevillea, ii. p. 89. 



A peculiar species, externally similar to L. JRalfsii, but differing in the 

 character of the thallus at the circumference, and in the colour of the 

 epithecium. More important anatomical differences are the smaller 

 spores and especially the character of the spermogones, which latter 

 places it in this section. In the two fragmentary specimens seen the 

 apothecia are very sparingly present. The spermogones also are rare, 

 with the spermatia, 0,016-20 mm. long, 0,001 mm. thick. 



Hab. On rocks in a maritime district. Distr. Very rare in one of the 

 Channel Islands. B. M. : Boulay Bay, Island of Jersey. 



