20 NEW LICHENS FliOM THE CAI'E OF GOOD HOPE. 



Ach., of which it is scarcely more than a subspecies, in having tl»e 

 thallus very thin, rimosc, and not effigurate at the circumference, and 

 the apothecia innate, depressed. Saxicole. 



13. Lecanora pyropoccila, Nyl. Thallus vitelline oranjre-coloured, 

 opaque, minutely graiiulose, scattered ; apothecia goldeu-suffron, 

 lecanorine, the thalline margin not prominent. Sa.\icole. 



14. Lecanora pramicans, Nyl. Subsimilarto L./erru(/mea, Huds., 

 but the apothecia (biatorine) are more brightly coloured, the spores 

 different in size, and the paraphyses slender. 



15. Lecanora glauco-livescens, Nyl. Thallus glaucescent, thin, 

 rimose, limited by a blackish hypothallus ; apothecia lurid- or livid- 

 brown, subzeorine ; spores 8 n a;, colourless, ellipsoid, 1-septate; para- 

 physes slender. Belongs to the section of L. disparata. Saxicole. 



16. Lecanora elccophcca, Nyl. Thallus olivaceous, depresso-granu- 

 lated, thin, determinate ; apothecia brown, more or less convex, with 

 thin, entire, or excluded thalline margin ; spores ellipsoid or fusiformi- 

 eliipsoid, 1-septate. Spermogones with somewhat long, shortly articu- 

 lated arthrosterigmata. Belongs to the same section as the preceding. 

 Saxicole. 



17. Leca7iora galactiniza, Nyl. This species differs from L. fjalac- 

 lina, Ach., more especially by the smaller brown apothecia and the 

 chemical reaction of the thallus (K-j-y^-'How), in which latter respect 

 it is also to be distinguished from L. galactinella, Nyl. It belongs to 

 the section of L. subfusca. Saxicole. 



18. Lecanora psaromela, Nyl. Very closely allied to Lecanora 

 psarophrma, Nyl. Pyr. Or., p. 10, but differing, amongst other marks of 

 distinction, in the planer and darker (almost black) apothecia and the 

 longer spores. The spermatia are fusiformi-bacillar. Saxicole. 



19. Lecanora dijfusilis, Nyl. Thallus white or whitish, unequal, 

 rimose ; apothecia black, lecideine, innate, immarginate, often con- 

 fluent and deformed ; spores ellipsoid. Spermogones not seen Ap- 

 parently belongs to the section of Lecanora atra. Saxicole. 



20. Fertusaria Water eanoides, Nyl. Sufficiently similar to P. Waw- 

 re«waMass., but the theca) are two-spored. Thallus K-j-yellow, then 

 cinnabarine-red. Spermatia bacilliform or bacillari-fusiform. Saxicole. 



21. Pertusaria subdealbata, Nyl. This species approaches to the 

 preceding, but the apothecia are innate in convex protuberances of the 

 thallus (one in each protuberance), and the spores are smaller and the 

 spermatia straight. Saxicole. 



22. Pertusaria vepallida, Nyl. Allied to P. erubescens, Tayl., but 

 having, amongst other differential characters, the thallus thinner, pale 

 whitish, and smooth, and the spores smaller. The spermatia are 

 straight. Saxicole. 



23. Urceolaria subcuprca, Nyl. Thallus lurid-brown (K — ,1 — ), 

 thin, arcolato-rimose, obsoletely whitish-reticulated on the surface ; 

 apothecia blackish, innate, at length pertuse above ; spores colourless, 

 murali-divided, ellipsoid ; spermatia thinly fusiformi-oblong. Ap- 

 proaches to U. doitaria, Nyl., Lich. St. Piuil. Saxicole. 



24. Lecidea chlorophccata, Nyl. Thallus greyish-green, thinly 

 granulose, thinnish, indeterminate ; apothcscia brownish, at length con- 

 vex and often aggregated, whitish within ; spores acicular, straight, 

 thin, indistinctly 3-5-septate. Saxicole. 



