334 NEW LICHENS FROM KEEGUELEN LAND. 



submoderate, the thalline receptacle densely whitish-hirsute or woolly. 

 Muscicole and caulicole. 



4. Pannaria ohscurior, N'yl. Resembling more obscure states of 

 P. hrunnea, but with the apothecia blackish, and the hymenial gela- 

 tine wine-red with iodine. Muscicole, associated with the preceding. 



5. Pannaria placodiopsis, Nyl. Thallus sordid-lutescent, placo- 

 dioideo-divided, the rays contiguous, somewhat turgid ; apothecia red, 

 nearly moderate, the thalline margin subentire ; spores ellipsoid, 

 moderate. Saxicole. 



6. Lecanora atro-msia, Nyl. Thallus whitish or csesio-whitish 

 (K-|- yellow) ; apothecia black, concolorous within, the thalline margin 

 scarcely prominent ; spores ellipsoid, submoderate ; spermogones with 

 somewhat curved spermatia. 



7. Lecanora vitelliiiella, Nyl. Resembling L. aiirantiaca * eryth- 

 rella, Ach., or rather L. vitellinula, Nyl., but more minute, with 

 smaller, turgid spores. 



8. Lecidea phmstoma, Nyl. Thallus greyish, thin, rugulose, rimu- 

 lose (K + yellowish) ; apothecia red, plane, with black margin, 

 nearly moderate ; spores colourless, ellipsoid, simple ; epithecium K-j- 

 violet ; hymenial gelatine bluish and then lutescent with iodine. 

 Belongs to the section of Z. parasema (Ach.). Saxicole. 



9. Lecidea assentiens, Nyl. Closely allied to Z. vorticosa, Flk., 

 but differing in reaction of thallus (K-j-yellow), the blackish epithe- 

 cium, and the colourless thalamium. Saxicole. 



10. Lecidea suhcontinua, Nyl., /. ferrea. Thallus ochraceous, 

 smooth, rimose; apothecia innate, plane; spores nearly moderate, 

 hypothecium black ; hymenial gelatine bluish with iodine. Saxicole. 



11. Lecidea Eatoni, Oromb. Thallus white or caesio-white, thin, 

 continuous (K-|- yellow, I — ), hypothallus black ; apothecia black, 

 concolorous within ; spores oblongo-ellipsoid, somewhat small, epi- 

 thecium bluish-black, hypothecium black ; hymenial gelatine bluish 

 with iodine. Belongs to the section of Z. contigiia. Saxicole. 



12. Lecidea sulplana^ Nyl. Allied to Z. plana, Lahm., from 

 which it differs in the thallus being white (K — , I — ), the larger spores 

 and shorter spermatia. Saxicole. 



13. Lecidea lygomma, Nyl. Thallus greyish or greyish-cyanescent, 

 thin, rimulose (K-1- yellow and then cinnabarine-red, I — ) ; apothecia 

 black, sublecanorine, plane, dark within ; spores nearly moderate, 

 hypothecium black ; hymenial gelatine bluish with iodine. Apparently 

 belonging to the section of Z. contigna. Saxicole. 



14. Lecidea perusta, Nyl. Thallus consisting of a black hypo- 

 thallus, in which are more or less scattered, minute, reddish-brown, 

 rotundato-angulose areolae ; apothecia black, at length somewhat con- 

 vex, dark -within ; spores colourless, at length blackish, ellipsoid, 

 simple, somewhat large, hypothecium colourless; hymenial gelatine 

 bluish with iodine. Saxicole. 



15. Lecidea subplicata, Nyl. This species presents the appearance 

 of Sarcogync simplex (Dav.), but in reality belongs to the section of 

 Lecidea coniops (Whlnb.). The spores are brown, 1 -septate, moderate ; 

 hymenial gelatine bluish and then wine-red with iodine. Saxicole. 



