Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 135 



crass. 0.0015 mm, apice clavatae, crass. O.0025 mm, septatae. Sporae ob- 

 longae aut bacillares, 3-sept., long. O.ou— O.oie, crass. O.003 — O.0035 mm, 

 apicibus obtusis. Gonidia globosa, diam. O.oos — O.oie mm, simplicia aut 

 raro 2-cellulosa, membrana sat tenui. Non sit distinguenda a T. fusi- 

 spora. — In T. fusispora sec. Th. Fr. „hymenium jodo caerulescit, 

 dein vinose rubet, epithecium KHO non mutatur, hypothecium peri- 

 theciumque violascunt, conidia acicularia, valde curvata". In T. aro- 

 maticam transire videtur. 



2. Thalloedaema Mass. 



Vain. Etud. Lich. Bres. II (1890) p. 18. Thalloidima Mass. Ric. 

 Lich. Crost. (1852) p. 95; Koerb. Syst. Lich. Germ. (1855) p. 178; 

 Th. Fr. Gen. Heterol. (1861) p. 80. Toninia *Thalloedema Th. Fr. Lich. 

 Scand. II (1874) p. 336. 



Thallus squamulosus aut ex areolis crenulatis lacinu- 

 latisve aut e verrucis prolificantibus constans aut ambitu 

 effiguratus. Apothecia sessilia. Sporae 8:nae, decolores, 

 minores, breves aut sat breves, ellipsoideae aut oblongae 

 vel elongato-oblongae aut fusiformes, 1 — 3-septatae. Goni- 

 dia cystococcacea. 



A. Thallus ambitu et medio uniformis. 

 a. Sporae 1-septatae. 



§ Hypothecium saltern superne rubricosum obscura- 

 tumve. 

 Z^ Thallus aut apothecia saltern partim pruinosa. 



1. Th. caeruleonigricans (Lightf.) Poetsch. Thallus squamis apice 

 convexis. Hypothecium superne fuscescens aut intense rubricosum. 136. 



Th. candidum (Web.) Mass. Thallus ad ambitum squamis 

 applanatis. Hypothecium superne dilute rubricosum. 138. 



ZaZ\ Thallus et apothecia baud pruinosa. 



2. Th. triste (Th. Fr.) Vain. Thallus tabacinus. 140. 



§§ Hypothecium pallidum aut decoloratum. 



Th. squalescens (Nyl.) Vain. Thallus squamulis convexis, 

 proliferis, cinerascentibus, baud pruinosis. 139. 



Th. conglomeratum (Ach.) Mass. Thallus squamulis planiu- 

 sculis concaviusculisve, proliferis, pallidis aut cinerascentibus, margine 

 subalbido- aut subcaesio-pruinoso. 145. 



i^. Sporae partim 3-septatae. 



3. Th. syncomistum (Floerk.) Vain. Squamulis in crustam verru- 

 culoso-inaequalem confluentibus. 141. 



