76 Acta Societatis pro Fauna et Flora fennica. VII. 



Fi\, Lich. Eur. Ref. (1831) p. 427; Xyl., Consp. Thelotr. (1861) p. 95: Tuck.. 

 Gen. Lich. (1872) p. 135, Syn. North Am. (1882) p. 223; Nyl. in Hue Addend. 

 (1886) p. 124; Moller, Cult. Flecht. (1887) p. 22. Trib. Thelotremeae Mull. 

 Arg., Graph. Feean. (1887) p. 3 & 5. 



Talhis crustaceus, uniformis, aut interdum hypophloeodes 

 endophloeodesve, hypothallo et hyphis medullaribus substrato af- 

 fixus, rhizinis nullis, homoeomericus aut saepe superne strato cor- 

 ticali obductus tenui, amorpho, ex hyphis tenuibus longitudinalibus 

 leptodermaticis conglutinatis formato, strato medullari stuppeo,- 

 toto gonidia continente aut (in speciebus thallo crassiore instruc- 

 tis) parte inferiore gonidiis destitute), ex hyphis contexto tenui- 

 bus, leptodermaticis. Gonidia chroolepoidea (ad Trentepohliam 

 umbrinam pertinentia: conf. Bornet, Rech. Gon. Lich. p. 10), 

 cellulis minutis, anguloso-subglobosis aut ellipsoideis aut par- 

 cius etiam oblongis, saltern primum concatenatis, fila saepe 

 parce ramosa formantibus, demum saepe pro parte etiam liberis, 

 membrana sat tenui aut raro crassa, flavovirescentia. Apothecia 

 thallo innata (aut parte inferiore substrato immersa), immersa 

 permanentia aut clemum emergentia et verrucas formantia. ro- 

 tundata aut raro oblonga, disco bene aut leviter thallo verrucaeve 

 impresso, aut urceolato, punctiformi aut dilatato. Hymenium 

 simplex integrumque aut columella peritheciali transjectum vel 

 varie divisum compositumve, hypothecio subhymeniali tenui im- 

 positum. Excipulum primum clausum, demum ostiolo parvo aut 

 lato aperiens aut clemum ad instar Lecanorae apertum, saltern 

 ad marginem duplex, ex amphithecio (exipulo thallode) et peri- 

 thecio (e. proprio) constans. Perithecium integrum aut saepius 

 basi apothecii deficiens, ex hyphis tenuibus leptodermaticis con- 

 glunatis formatum (cellulis saepe brevibus aut sat brevibus), su- 

 perne aut cxtus amphithecio obductum gonidia continente, tex- 

 tura thallo consimili, in speciebus corticolis fragmenta substrati 

 includente. Paraphyses numerosae, vulgo neque ramosae, nee 

 connexae, nee spinuloso-verruculosae. Asci membrana tenui. 

 Sporae 8:nae — solitariae, oblongae aut ellipsoideae aut ovoideae 

 aut fusiformes aut elongatae, decolores aut demum obscuratae, 

 septatae et loculis lenticularibus instructae aut murales, vulgo 

 jodo violascentes caerulescentesve aut raro baud reagentes (cete- 

 riini hymenium jodo haud reagens). „Conceptacuh pyenoconi- 



& 



