ti 



438 RET. J. M. CROMBIE ON LICHENS 



lato-rimosus, hypothallo caerulescenti-nigricante passim visibili ; apo- 

 thecia nigra, lecideina, plana, marginata (latit, 005-0*07 millim.), intus 

 albida ; sporae 8nse, incolores, placodinae, longit. 001 1-0*015 millim., 

 crassit. 0*005-0*008 millim.; paraphyses mediocres; epithecium et 

 perithecium caerulescenti-nigrescentia ; hypothecium incolor. Iodo 

 gelatina hymenialis intensive caerulescens. 



Est species e stirpe Lecanorce diphyodis, proxima L. Kurzii (Kphb.). 

 Affinitas videtur inter Lecanoras, etiamsi apothecia lecideina. Thallus 

 K flavens. Spermogonia arthrosterigmatibus munita; spermatia 

 minutula, oblongo-eylindrica, longit. 0*002 millim., crassit. 0*0006 

 millim. " — NyL in litt. 

 On rocks ; very sparingly gathered. Coll. Balf. no. 2354. 



* Lecanora OBLiQUANS,2VyZ. " Differt thallo cinerascente tenuissimo 

 continuo. Occurrit quoque epithecio albo-suffuso. Forsan propria 



species." — NyL in litt. 



On rocks; apparently not uncommon. Coll. Balf. nos. 2229, 2296, 

 2363. 



L. carneopusca, Nyl. 9 sp. n. 



" Thallus glauco-cinerascens vel glauco-albidus, tenuis, inaequalis, areo- 



lato-rimulosus ; apothecia carneo-fusca vel rufeseenti-fusca, lecano- 



rina (latit. 1 millim. vel minora), margine thallino integro cincta ; 



spore 8nae, incolores, placodinae, longit. 0011-0018 millim., crassit. 



0*007-0*009 millim. ; paraphyses fere mediocres ; epithecium sordide 



sublutescens. Iodo gelatina hymenialis intensive caerulescens. 

 94 Species accedens ad Lecanoram camptidiam, Tuck., a qua thallo areo- 



lato rimuloso et sporis nonnihil majoribus praesertim differt. ,, — NyL 



in litt. 



On rocks ; probably common. Coll. Balf. no. 2293. 



L. subfusca f. pumicicola, NyL " Differt a f. campestri, Scbaer., 

 praesertim thallo subdisperso, e granulis sat tenuibus constans vel 

 variantibus convexiusculis, ambitu subcrenatis (latit. 1 millim. vel 

 minoribus), passim contiguis. Apothecia fusca (latit. 1 millim. vel 

 minora), margine thallino integro aut obsolete subcrenulato ; sporae 

 longit. 001 1-0-012 millim., crassit. 0006-0007 millim. ; paraphyses 

 tenues, molles; epithecium rufescenti-fuscum. Iodo gelatina hyme- 

 nialis caerulescens, dein violaceo tincta." — NyL in litt. 



This very distinct form may easily be recognized by the above 

 characters of the thallus, &c. 



On rocks ; apparently common. Coll. Balf. nos. 2296, 2299. 



t 



L. subflavicans, NyL y sp. n. 



" Thallus albidus vel albido-flavescens, tenuis, granuloso-inaequalis (K+> 

 flavens) ; apothecia testaceo-lutescentia vel testaceo-nallida (latit. 0*5- 



