Knight. — On some New Zealand Lichens. 359 



isidiose; and (3) L. taitensis var. suhtuherculosa, with smoother thallus, the 

 disk and margin of the apothecium brownish-black, spores 0-033 mm. in 

 length, and hypothecium pale yellow. 



In L. marginiflexa the asci contain only one spore in each and that linear 

 oblong and bilocular. In L. fusco-lutea, Dicks., also, the asci contain only 

 one spore in each, but that is linear oblong or cylindrical, and minutely 

 muricated. 



8c. Lecidea versicolor, F^e. 



Tliallus albus, granulato-insequalis vel granuloso-isidiosus. Apothecia 

 disco fusco, et margine pallido, tumido, undulato. Sporce uniseptatse, ovatse, 

 incolores, longit. 0-05 mm., crassit. 0*023 mm. Hypothecium album. 



Ad corticem arborum. 



Thallus white, granulose, unequal, or granular-isidiose. Apothecia with 

 brown disk, and pale tumid wavy margin. Spores 1 -septate, ovate, colourless, 

 0*05 millim. long, 0*023 millim. thick. Hypothecium white. 



9. Lecidea taitensis, Mont. 



Thallus cineraceus vel eborinus, granulatus vel verrucoso-rugosus, passim 

 rimulosus. Apothecia disco fumeo, et margine fusco-atro, tumido, undulato. 

 Sporce pallido-luteae vel incolores, magnse, ovatse, incurviusculse, uniseptatse, 

 longit. 0*075 mm., crassit. 0*035 mm. Stratum hypothecii subhymeniale 

 incolore, perithecium fuscum. 



Ad corticem arborum. 



Thallus greyish or cream-coloured, granulate or warty rugose, here and 



there rimulose. Apothecia greyish-brown, and margin brownish-black, 



tumid, wavy. Spores pale yellow or colourless, large, ovate, little incurved, 



^1-septate, 0*075 millim. long, 0*035 millim. thick. Hymeneal stratum of 



hypothecium colourless ; perithecium brown. 



On bark. 



10. Lecanora contigua, Ach., var. meiospora, Nyl. 



Thallus albus vel cineraceus, areolatus, linea fusca limitatus. Apothecia 

 sessilia, convexa, fusco-nigra, immarginata. Sporce incolores, ellipsoidese, 

 longit. 0*014 mm., crassit. 0*008 mm. Hypothecium fusco-nigrum. 



Ad saxa et supra terram argillaceam. 



Thallus white or ashy-white, areolate or cracked, bounded by a dark line. 

 Apothecia sessile, convex, brownish-black, immarginate. Spores colourless, 

 ellipsoid, 0*014 millim. long, 0*008 millim. thick. Hypothecium brownish- 

 black. 



On rocks and clayey banks. 



11. Lecidea melanotropa, Nyl. 

 Thallus fractus, granuloso-insequalis vel granuloso-rimosus, in aliquot 



