86 Acta Societatis pro Fauua ct Flora fennica, ^ II. 



lensani, iln formans. HypotheLimi subliynicniale albidum, parlc 

 inleriorc j)allidum. Paraphysea 0,00 15 millim. crassae, apice haud 

 incrassatac, gclatinam in KllO lurgescentcm percurrcntes, haud 

 ramosac. Asci cylindrici. Sporae imbricatim monostichac, ob- 

 longac aut ovoidco-oblongae, apicibus rotundatis aut obtusis, ha- 

 lonc nullo, loculis lcnticularibus, jodo violaceo-caerulesccntes. 



2. Gyrostomum. 



Fr., Syst. Orb. Veg. (1825) p. 268; Tiick., Gen. Licli. (1872) p. 140, Syn. 

 Nortli Am. (1882) p. 228; Milll. Arg., Grapli. Fee (1887) p. 4 et 52. Gymno- 

 trema Kyl., iKnum. Gen. Licli. (1857) p. 119. 



Thallus crustaceus, uniformis, hypothallo aut hyphis medul- 

 laribus substrato affixus, rhizinis nuUis, strato corticali haud evo- 

 luto, strato meditllari stuppeo, toto gonidia continente, cx hyphis 

 contcxto tenuibus, leptodermaticis. Gonidia chroolepoidea, cellu- 

 lis minutis, anguloso-subglobosis aut cllipsoideis aut parcius etiam 

 oblongis, saltem primum concatenatis, filamenta saepe parce 

 ramosa formantibus, demum saepe pro parte etiam hberis, mem- 

 brana sat tenui, flavovirescentia. Apothecia thallo innata, demum 

 emergentia adpressave, orbicularia aut subrotunda, disco aperto, 

 concavo urceolatove, simpKce, margine bene cvoluto proprio aut 

 dupHce cincta. Peritheciiini integrum aut dimidiatum, fuligineum 

 fuscescensve aut inferne pallidum, ex hyphis tenuibus leptoder- 

 maticis conglutinatis formatum, extus denudatum aut amj^hithecio 

 thallino evanescente aut bene evoluto obductum. Paraphyses 

 numerosae, parce ramoso-connexae, apice haud aut vix incras- 

 satae, neque flexuosae, nec spinuloso-verruculosae. Asci mem- 

 brana sat tenui. Spjorae 8:nae aut pauciores, oblongae aut fusi- 

 formi-oblongae, murales, demum obscuratae. 



1. G. scyplmliferum (Ach.) Fr., Syst. Orb. Yeg. (1825) p. 



268; Nyl., Lich. Kov.-Orau. (1863) p. 455; Kyl,, Syn. Lich. Nov. 

 Caled. (1868) p. 39; Mitll. Arg., Lich. Beitr. (Fl. 1885) p. 941, 

 Rev. Lich. Meyen. p. 315, C-fraph. Feean. (1887) p. 52, Tuck., Syn. 

 North Am. (1882) p. 228. Lecidea scijplmlifera Ach., Syn. Lich. (1814) 

 p. 27 (hb. Ach.). Gymnotrema atratum (Fee) Nyl., Enum. Gren. 

 Lich. (1857) p. 119 pr. p. (mus. Paris.). 



Thcdlus tenuis, albidus. Apothecia vulgo sat approximata, 



