L Discolichenes 



sive 



Ascomycetes gymnocarpi cum algis symbiotice vigentes. 



Hymenium discum applanatum, dilatatum aut puncti- vel 

 rimaeformem, primum excipulo thallove inclusum et demum aut 

 jam primo denudatum, formans. 



A. Cyclocarpeae. 



Apotheda saltem primo orbicularia. Farapliyses arcte aut 

 laxe congkitinatae, aeque longae, in capillitium haud continuatae. 

 Sporae ejectae mazaedlum (vel massam sporalem capillitio immix- 

 tam) haud formantes. 



Trib. 1. Parmelieae, 



Tliallus fohaceus aut fruticulosus fihformisve, applanatus 

 aut teres, heteromericus. Stratum corticale cartilagineum, ex hy- 

 phis sat pachydermaticis, conglutinatis, crebrius aut increbrius 

 septatis, kimine cellularum angusto instructis formatum. Stratwn 

 medullare hyphis vulgo comparate pachydermaticis, kunine ceUu- 

 larum tenui. Gonidia protococcoidea, simphcia, flavovirescentia. 

 Apothecia thaUo innata, demum elevata peUataque et basi excipuh 

 bene constricta. Excijmlum thakodes, gonidia continens, strato 

 corticali cartilagineo, ex hyphis sat pachydermaticis, conglutina- 

 tis, lumine cehularum angusto instructis, formato, strato medullari 

 stuppeo. Paraphyses evoiutae, simphces aut ramoso-connexae. 

 Sporae decolores aut raro fuscescentes, ellipsoideae aut oblongae 

 aut globosae, simphces aut raro septatae (Schizopelte Th. Fr.) 



