394 



A. ZAHLBRL'CKNEE 



Bombyliospora De Not. 



B. dolichospora A. Zahlbr. nov. comb. 



Lecidea dolichospora Nyl. in Annal. Scienc. Nat., Bot., <cr. 4, vol. Ill, 1855, 

 j). 162. — Bacidia dolichospora Trevis. in Linnaea, vol. XXVIII, 1856, p. 293. 



»Auf Xanthoxylum-K\K\dQ» (Herb. Delessert). 



Caloplaca Th. Fr. 



A. Sporae simpliciter septatae, membrana aequali cinctae, thallus isidio- 

 phorus C. isidioclada. 



B. Sporae polari-bi- vel triloculares; thallus non isidiophorus. 



I. Thallus crustaceus, uniformis. 



1. Sporae polari-biloculares. 



a. Species corticola; apothecia minuta, 0,2 — 0,3 (0,4) mm lata, 

 pallida, vix conspicua C. clandcstina. 



p. Species saxicolae; apothecia distincte majora; apothecia 

 laete colorata. 



§. Thallus, late expansus, tenuiter rimulosus, granularis 



vel granulari-leprosus C. Selkirki. 



§§. Thallus ex areolis formatus rotundatis, planis, superne 



laevigatis, plus minus dispersis C. rubina. 



2. Sporae polari-triloculares C. subcerina. 

 II. Thallus effiguratus. 



1. Laciniae marginales elongatae, lineares et rectae C. orthodada. 



2. Laciniae marginales breves et dilatatae 



C. elegans var. australis. 



Sect Eucaloplaca Th. Fr. 



*C. clandestina A. Zahlbr. nov. spec. 



Thallus epiphloeodes, substratum arete obducens, tenuis, subochraceo- 

 albidus, opacus, KHO magis flavescens, continuus, laevis, sorediis et isidiis non 

 praeditus. 



Apothecia lecanorina, parva, 0,3 — 0,4 mm lata, dispersa vel approximata, 

 sessilia, tenuia; discus thallo fere concolor, vix magis lutescens, e concavo sub- 

 planus, madefactus turgidus;. margo thallinus disco concolor, tenuis, integer, 

 haud prominulus; hymenium superne anguste fuscescenti-lutescens, non in- 

 spersum, KHO aurantiacum, caeterum aquoso-pellucidum, decolor; paraphyses 

 tenues, 0,2—0,3 a crassae, conglutinatae, simplices, inferne eseptatae, in parte 

 superiore submoniliformes, tenuiter septatae, in ipso apice rotundato-clavatae; 

 asci oblongo-clavati, ad apicem rotundati et membrana sat bene incrassata 



