y 



216 TRANSACTIONS OF THE 



(latit. circ. 1 mm.), margine tliallino tenui crenulato cincta ; 

 sporse Snse incolores simplices ellipsoidese -012 — -016 x -OOT— -01 

 mm.; parapbyses satis bene distinctse. lodo gel. hym. coerules- 

 cens dein sordida. Gonimia mediocria plerumgue oblonga coerules- 

 centia in glomerulis majusculis contenta. Ad cortices vetustiores 

 vel emortuos in Boschberg. 



Tbis licben is one of a group having close affinities, and is 

 nearly allied to P. mhlurida (Nyl.) 



Pannaria pityrella (Stn.), sp. nov. 



Tballus pallide plumbeus vel glaucescens squamulosus, squa- 

 mulis tenuibus adscendentibus imbricatis parvis (longit. -3 - "6 

 mm.), birsutulis quasi tomentellis cuneatis radiato-dissectis 

 et leviter vel obsolete radiato-striatulis, subtus concoloribus ; 

 apothecia carnea vel carneo-pallescentia biatorina, parva (latit. 

 '2 -'4 mm.) plana, tenuiter vel (interdum) vix marginata, 

 conceptaculo subtus plerumque pallido-ciliato ; sporse Snse incolores 

 globosse, simplices ssepe nucleatse, diam. -004 — '0055 mm.; 

 parapbyses parcse pellucidse fere conglutinatae apice fere incolores ; 

 hypothecium incolor. lodo gel. hym. coerulescens dein fulvescens. 

 Gonimia plerumque sirosiphoidea coeruleo-virescentia latit. circ. 

 •008 mm. Corticola, prope Bonny Eiver in Africa occid. 

 (A. Grant). Affinis, ut videtur, P. asterellse (Nyl.) 



Occasionally the squamee become decolorized to a pale or pale 

 yellow colour. 



Lecanora Domingensis (Ach.) 



Lecanora aureola (Tuck.) 



Lecanora punicea (Ach.) 

 * collata (Stn.) 



Thallus albidus vel partim pallide virescens vel pallide flaves- 

 cens rugulosus; apothecia coccinea (thalamii parte supera cum 

 epithecio K persistenter violaceo-tincta) ; sporae 8nse bacillares, 

 9-16-septat8e, -054— -08 x -0045— -006 mm. Corticola. 



This is evidently an intermediate link between i. pwrncm and 

 L. hcemafomma (Ach.). I have not been successful in detecting 

 spermogonia in the only specimen in possession, and so far there 

 remains a doubt as to the side towards which the cape plant 

 tends. 



Pertusaria elatior (Stn.), sp. nov. 



I 



