266 Dr. W. Nylander on new British Lichens. 



lim.), planiuscula vel convexiuscula, immarginata (interdum 

 margine obsoleto), intus incoloria; spora? 8 nai , incolores, 

 ellipsoideas, simplices, longit. 0*007-0*008, crassit. 0*0025- 

 0*0035 millim. ; pararjhyses non discretes* epithecium. in- 

 color (vel passim vage nonnihil obscuratum) ; hypothecium 

 to turn fusco-obscuratum. Iodo gelatina hymenea vinose 

 rubens (prascedente caerulescentia levi). 



Supra ligna fabrefacta vetusta prope vicum Lyndhurst in 

 New Forest (Crombie). 



Apotliecia sat conferta. Maxime accedere videtur ad L. 

 myriocarpoidem Nyl. (cf. 'Flora/ 1866, p. 86), qua? vero 

 apotliecia habet magis sparsa laminaque tenui visa epithecio 

 distincte luteo-fuscescente, hypothecio fusco infra (et peri- 

 thecio) pallidiore, gelatinam hymenialem iodo caerulescentem 

 (dein lutescentem), etc. Accedit quoque versus L. dispansam 

 Nyl. (cf. Lich. Lapp. Or. p. 186) et versus L. turgidulam Fr. 

 Spermatia oblonga (longit. 0*0040-0*0045 millim., crassit. 

 0*0015 millim.), sterigmatibus brevibus. 



5. Lecidea leptostigma, Nyl. 



Apotliecia (parasitica verisimiliter in tliallo albido mediocri 

 rimuloso) fusco-nigricantia, plane innata (latit. circ. 0*4 mil- 

 lim. vel minora), tenuia, gregaria; sporse 8 n{e , globosae vel 

 globoso-ellipsoidese (diam. 0*005-0*009 millim.), in thecis 

 cylindraceis uniseriata? ; paraphyses mediocres, sursum sen- 

 sim crassiores (et versus apicem sordide lutescentes) ; hypo- 

 thecium vix lutescens. Iodo gelatina hymenialis non tincta. 



Supra saxa micacea in Scotia (Crombie). 

 Forte sit fungillus. 



6. Lecidea Crombiei, Jones. 



Thallus sulphureus vel albido-sulphureus (hydrate kalico flavo- 

 tinctus), mediocris, inaequalis, rimoso-diffractus vel passim 

 subareolatus, hypothallo nigro limitatus ; apotliecia nigra, 

 mediocria (latit. circiter 1 millim.), innata, convexiuscula, 

 immarginata, intus cinerascenti-obscurata ; sporae 8 nae , in- 

 colores, ellipsoidea?, longit. 0*010-0*012 millim., crassit. 

 0*006-0*007 millim., thalamium cgerulescens ; epithecium 

 caeruleo-nigricans ; paraphyses non bene discrete ; hypo- 

 thecium incolor (vel dilute rufescens). Iodo gelatina hy- 

 menialis cgerulescens (theca? apice magis tincta?). 



Supra saxa in monte Scotia? Glen Callaben (Crombie). 



Hypothallus niger passim inter areolas thalli visibilis. Spe- 

 cies hasc, a beato Jones distincta, prope L. theiodem Sinmrf. 

 locum habet. 



