88 TRANSACTIONS OF THE 



Lecidea COROLLIDIA. 



Thallus pallidas vel pallide cinereus crassiusculus, diffracto-areo- 

 latus. areolis planiusculis (K e flavente rubens); apothecia nigra 

 adnata majuscula (latifc. 1 — 2 ram.) planiviscula rugosa, interdum 

 csesio-pruinosa, margine obtuse flexuoso vel sinuoso ; sporse Snse 

 incolores simplices ellipsoidese, -015 — -02 X "008 — "Oil mm., 

 parapliyses pellncidse non bene discretse, apicibus fuscescentibus ; 

 hypotlaecium crassum fusco-nigrum. lodo gel. liym. intense coeru- 

 lescens. 



Ad saxa, Thurso. 



Beautiful acicular crystals, -018 — -024 X '002 mm., are formed 

 by the action of K on thallus and subhymenial spaces. At first a 

 clear solution of a yellow colour appears, and thereafter stellate 

 groups of these reddish crystals. 



Lecidea Calpodes, Sp. nov. 



Thallus obscure cinereus areolato-difii'actus, areolis convexius- 

 culis contiguis vel dispersis; apothecia minufca (latit. "15 — 25 

 mm.) numerosissima innato-sessilia nigra concava (suburceolata), 

 acute marginata demum nOnnihil explanata, intiis pallida vel 

 palljde fuscescentia ; sporae Snse incolores simplices ellipsoidese, 

 fere sphsericse, -007 — 0085 X '006 — -007 mm., paraphyses 

 irregulares non bene distinctse apicibus fuscescentibus ; hypothecium 

 fuscum vel pallide fuscescens tenue. lodo gel. hym. leviter vel 

 vix coerulescens dein vinose rubens. 



Ad saxa, Killicrankie, K renders the paraphyses as distinct, 

 filiform, irregular branching fibres. 



Lecidea Restricta, Sp. nov. 



Thallus nigro-cinereus rugosus tenuis ; apothecia adnata nigra 

 parva (latit. -3 — -4 mm.) plana obtuse marginata; sporse 8 nse 

 simplices, in thecis saccatis, incolores ellipsoidese (bi-nucleatse), 

 •013 — --017 X '008 — -01 mm.; paraphyses distinctse filiformes 

 crassse (crass. -0025 — -003 mm.), epithecio fuscescente, acido' 

 nitrico roseo-purpurascente ; hypothecium incolor. lodo gel. hym. 

 coerulescens dein fulvescens prsesertim thecarum. 



Ad saxa, Blair Athole. 



