266 Dr. W. Nylander on new British Lichens. 



lim.), planiuscula vel convexiuscula, immarginata (interdum 

 margine obsolete), intus incoloria; sporse 8"*, incolores, 

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

 0"0035 millim. ; paraphyses non discretee ; epithecium in- 

 color (vel passim vage nonnihil obscuratum) ; hypothecium 

 totiim fusco-obscuratura, lodo gelatina liymenea vinose 

 rubeus (prgecedente cjerulescentia levi). 



Supra ligna fabrefacta vetusta prope vicum Lyndhurst in 

 New Forest (Crombie) . 



Apothecia sat eonferta. Maxime accedere videtur ad L. 

 myriocarpoidem Nyl. (of. ' Flora/ 1866, p. 86), quae vero 

 apothecia habet magis sparsa laminaque tenui visa epithecio 

 distincte luteo-fiiscescente, hypotliecio fusco infra (et peri- 

 tliecio) pallidiore, gelatinam hymenialem iodo cferulescentem 

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

 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. 



Apothecia (parasitica verisirniliter in thallo albido mediocri 

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

 lim. vel minora), tenuia, gregaria ; sporje 8"*, globosfe vel 

 globoso-ellipsoidege (diam. 0"005-0"009 millim.), in thecis 

 cylindraceis uniseriatae ; 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 Cronibiei^ Jones. 



Thallus sulphureus vel albido-sulphureus (hydrate kalico flavo- 

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

 subareolatus, hypothallo nigro limitatus ; apothecia nigra, 

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

 immarginata, intus cinerascenti-obscurata ; sporae 8"^, in- 

 colores, ellipsoideas, longit. 0'010-0"012 millim., crassit. 

 0'006-0'007 millim., thalamium cserulescens ; epithecium 

 cseruleo-nigricans ; paraphyses non bene discretae ; hypo- 

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

 menialis cserulescens (thec^e apice magis tinctte). 



Supra saxa in monte Scotise Glen Callaben (Crombie). 



Hypothallus niger passim inter arcolas thalli visibilis. Spe- 

 cies hajc, a beato Jones distincta, prope L. theiodem Smmrf. 

 locimi habet. 



