184 KEY. J. M. CEOMBIE ON LICHENS 



Psoroma hirsutulum, Nyl> sp. n. Thallus inter apothecia parura 

 evolutus ; apothecia rufo-fuscescentia coneava (latit 1-2 millim.), 

 receptaculo thallino toto dense albido-hirsuto vel vellereo, conferta. 

 Spora longit. 0016-0-021 millim., crassit. 0'009-0'014 millira. 



On mosses and decayed stems. Observatory Bay. 



Very sparingly gathered. 



To this approaches JParmelia paleacea, Hook. fil. El. Antarct. 

 p. 534, t. 197. f. 3, which, however, is less hirsute. 



Placopsis gelida (L.). 



On rocks. Observatory Bay. 



Sparingly. 



Pl. gelida, f. lateritia, NyL "Thallo toto ferrose ochraceo- 



tincta. 



>? 



On rocks. Swain's Bay. 



■ 



Apparently abundant. 



Lecanora (Placodium) elegans, Ach. 

 On rocks. Swain's Bay and Royal Sound. 



Probably not uncommon. 



L. (Pl.) elegans, f. lucens, NyL Minor, thallo subvitellino. Sporae 



longit. 0011 millim., crassit. 0*005 millim. 

 On stems. Observatory Bay. 



Sparingly, and associated with other lichens . 



L. subunicolor, NyL Minus evoluta, thallo macro. Sporae longit. 



0-009-0015 millim., crassit. O-004-O-OO7 millim. 

 On rocks. Royal Sound. 



Very sparingly, only two or three apothecia being visible. 

 The present specimen may therefore be slightly different from the 

 Cape-of-Grood-Hope plant. 



L. vitellinella, NyL Quasi L. aurantiaca *erythrella, Ach., vel 

 potius L. vitellinula, Nyl. Minuta, sporis minoribus turgidulis, 

 longit. 0007-0009 millim., crassit. 0-005-0007 millim. 



On rocks. Swain's Bay. 



Very sparingly seen. 



L. diphyella, NyL, sp. n. Thallus macula pallido-cinerea indicatus. 

 Apothecia nigra lecideina marginata parvula (latit. 0-2-0*3 millim.), 

 intus obscura. Sporae 8nae, incolores, piacodiomorphae, longit. 0*012- ■ 

 0*017 millim.. crassit. 0008-0-010 millim.: naranhvses mediocres; 



epithecium cum perithecio et hypothecio nigricantibus. Iodo gelatina 

 hymenialis intensive caerulescens (thecae praesertim tinctae). 

 Species peculiaris quae videtur affinis L. diphyi, NyL, sed notis datis 

 apothechs minoribus, hypothecio nigro, sporis crassioribus &c. differt. 



