s 



90 Acta Societatis pro Fauna ct Flora fennica, VIF. 



Tiib. 18. Leeaiijutirteae. 



Thallus cTUs^taccus, vulgo honioeomcricus. Stratum corti- 

 ccde liaud cvoluluin. Stratuui niedullare sluppeuui, lolum vulgo 

 gonidia continens. hypliis le])todermaticis. Gonidia chroolepoidea. 

 Apothecia orbicularia, dcnium thallo adpressa. Exciimlim carti- 

 higineum, fuhgineum, strato medullari stuppeo nullo, gonidiis de- 

 ^titulum. Paraphi/ses ramoso-connexac. Sporae longae aut sat 

 longae, septatae, decolorcs, membrana interne haud incrassata. 



1. Lecanactis. 



Eschw., Syst. Licli. (1824) p. 18 (emend.); Fr., Lich. Eur. Ptef. (1831) 

 p. 374 (em.), Leight., Brit. Graph. (1854) p. 47 (em.); Mass., Ric. Lich. Crost. 

 (1852) p. 53 (em.); Koerb., Syst. Germ. (1855) p. 275 (em.); Th. Fr., Gen. 

 Heterolich. (1861) p. 93 (em.); Tuck., Gen. Lich. (1872) p. 193, Syn. North 

 Am. II (1888) p. 114. Opegrapha sect. III Lecanactis Milll. Arg., Lich. Beitr. 

 (Fl. 1880) n. 156, Graph. Feean. (1887) p. 18. 



Thallus crustaceus, uniformis, hypothallo et hyphis medul- 



laribus substrato affixus, rhizinis et strato corticaU destitutus, 



vulgo fere totus gonidia continens, hyphis tenuibus, leptoderma- 



ticis. Goniclia chroolepoidea (Trentepohliae umbrinae Bornet 



simiHa). Apothecia demum elevata adpressaque, (saltem primum) 



orbicularia, lecideina gonidiisque destituta, disco dilatato. Exci- 



pAdum proprium (e perithecio et hypothecio constans), fuhgineum, 



ex hyphis conglutinatis formatum, strato medullari nullo distincto. 



Paraphyses ramoso-connexae ramosacque, vulgo superne flcxuo- 



sac. Sporae 8:nae aut pauciores, fusiformes aut fusiformi-oblon- 



gae aut articularcs, demum 3 pluri-septatae, dccolores, locuhs 



cyhndricis aut subcyhndricis. ,,Pycnoconidia oblonga aut cyhn- 



Hndrica. Sterigmata simpUcia." (Tuck., Syn. North. Am. II p. 114.) 



1. L. Leprienrii (Mont.) Tuck., Gen. Lich. (1872) p. 194. 



Lecidea Mont. in Ann. Sc. Nat. 3 ser. Bot. T. XVI (1851) p. 56, 

 Syllog. (1856) p. 34; Nyl., Lich. Nov.-Gran. (1863) p. 463, ecL 2 

 (1863) p. 356 (mus. Paris.). Opjegraplia Mull. Arg., Lich. Beitr. 

 (Fl. 1882) n. 439. Patellaria Ucolor Karst. in Rev. Mvcol. 1889 p. 

 205. Lecanidion Saccardo, SylL Eung. VIII (1889) p. 798. 



TJicdlits tenuis aut tcnuissimus, cinereo- aut oHvaceo-glau- 



cesccns. Ap>othecia vulgo sat soHtaria, elcvata, orbicularia aut 



