g2 Kryptogamen. - Flechten. 



v. subincol. Spermatia oblonga; sterigmata simplicia. Thallus crustaceus uniformis aut sae- 

 pius obsoletus. — z. B. M. arthonioides (Fee) Nyl. 



Farn. II. Gpegraphei Stizb. Apothecia lirellaef ormia , rarissime rotundato-difformia. 



49. Opegrapba (Humb.) Ach., Nyl. Apothecia lirellaeformia (rarius 

 rotundata) subsimplicia, plerumque superficialia, excipulo proprio fere semper integre nigro. 

 Sporae parvulae ex ellipsoideo dactyloideae v. saepius fusiformes, bi — quadri— pluriloculares, 

 fuscescentes v. decolor. Spermatia oblonga v. bacillaria; sterigmata simplicia. Thallus 

 crustaceus uniformis v. saepe hypophloeodes. — z. B. 0. varia (Pers.). 0. atra (Pers.), 0. 

 viridis Pers. 



50. Xylographa. Fr., Nyl. Apothecia ex angulato-patellaeformi sae- 

 pius lirellaeformia, excipulo proprio ceraceo. Sporae ellipsoideae simplices decolor. Sper- 

 matia acicularia; sterigmata simplicia. Thallus crustaceus uniformis aut obsoletus. — z. B. 

 X. parallela Nyl., X. opegraphella Nyl. 



51. Graphis Ach., Nyl. Apothecia lirellaeformia subramosa v. rarissime 

 rotundato-difformia, plerumque innata, excipulo proprio v. colorato v. nigro basi saepius 

 incol. , a thallino thallodeve fere semper coronato. Sporae ex ellipsoideo oblongae v. eru- 

 caeformes, quadri— pluriloculares v. muriformi-multiloculares, fuscescentes v. decolor. Sper- 

 matia (q. cogn.) oblonga v. bacillaria, sterigmata simplicia. Thallus crustaceus uniformis. 



— z. B. G. scripta Ach. 



Farn. III. Glyphidei (Fr.) Mont. Apothecia plura in stromate thallode verrucae- 

 formi collecta. 



52. Chiodecton Ach. Apothecia rotundato-difformia oblongave, plano- 

 convexa, immarginata, hypothecio nigricante suffulta, in stromate albo immersa. Sporae 

 fusiformes v. nunc oblongo-ovoideae, quadri— pluriloculares, rarissime muriformi-multiloculares, 

 fere semper incolor. Spermatia acicularia; sterigmata simplicia. Thallus crustaceus uniformis. 



— z. B. Ch. rubro-cinctum Nyl. 



53. Glyphis Ach., Mont., Nyl. Apothecia rotundata v. oblonga concava 

 nigra in stromate albo conferta. Sporae ex ellipsoideo oblongae erucaeformesque, e quadri- 

 pluriloculares fuscescentes v. incol. Spermatia haud visa. Thallus crustaceus, uniformis. — 

 z. B. G. Achariana Tuck. 



Farn. IV. Arthoniei Körb. Apothecia difformia immarginata stromatoideo- 

 subconfluentia. 



54. Arthonia Ach., Nyl. Apothecia rotundata oblongave, margine 

 accessorio thallode nunc instructa, proprio destituta, plus minus aggregata v. dein in pseudo- 

 stroma difforme v. rotundatum v. stellatum confiuentia. Sporae (in thecis plerumque abbre- 

 viatis pyriformibus) oblongo-ovoideae (nymphaeformes) v. oblongae v. rarissime fusiformes, 

 2— 4-pluriloculares, demum et muriformi-multiloculares, fuscescentes v. decolor. Spermatia 

 oblonga v. bacillaria v. acicularia; sterigmata simplicia. Thallus crustaceus uniformis aut 

 hypophloeodes. — z. B. A. cinnabarina (DC.) , A. impolita (Ehrh.) , A. lurida Ach., A. 

 astroidea (Ach.), A. varians Dav., A. spectabilis Flot. 



55. Mycoporum (Flot.) Nyl. Apothecia subcomposita, pseudostromate 

 difformi nigro hymenia (1— plura) fovente. Sporae (in thecis abbreviatis subpyriformibus) 

 oblongo-ovoideae v. oblongae, bi — quadriloculares. v. dein muriformi-multiloculares fusces- 

 centes v. decolor. Spermatia haud visa. Thallus crustaceus uniformis v. hypophloeodes. — 

 z. B. M. pycnocarpum Nyl. 



Appendix. Agyrium (Fr.) Nyl. Apothecia rotundata v. oblonga, homo- 

 genea ceracea immarginata. Sporae (in thecis clavatis) ellipsoideae simplices subincol. 

 Spermatia haud cognita. Thallus „parum vel vix visibilis". — z. B. A. ruf um (Pers.) Fr. 



Trib. IV. Caliciacei. 



Apothecia turbinato-lentiformia (crateriformia) globosave excipulo proprio v. nudo, 

 saepius stipitato, v. a thallino accessorio recepto, capitulum discoideum e sporis nudis coacer- 

 vatis compactum submarginante. 



