KOLOMAAL 







SYNOPSIS OF THE FAMILIES, TRIBES, AND 

 GENERA OF BRITISH LICHENS. 



Family I. EPHEBACEI Nyl. Thallus slightly turgid when 

 moist, cellular within ; gonimia tunicated, not moniliform. 



Tribe I. SIROSIPHEI Nyl. Thallus filamentoso-fruticulose ; 

 gonimia variously connate : apothecia biatorine or lecideine. 



1. Gonionema Nyl. Thallus fibrillose, tubuliform ; gonimia con- 

 nate in one continuous series: apothecia biatorine, with simple 

 spores and paraphyses ; spermogones with simple sterigmata and 

 minute oblong spermatia. 



2. Spilonema Born. Thallus fruticulose, cylindrical, often pul- 

 vinate ; gonimia connate in transverse layers : apothecia lecideine, 

 with simple or 1-septate spores and articulate paraphyses ; spermo- 

 gones with jointed sterigmata and shortly cylindrical spermatia. 



Tribe II. PYRENOPSEI Nyl. Thallus thinly granulose, rubri- 

 cose within ; gonimia simple or connate : apothecia lecanorine or 

 pyrenocarpous. 



3. Enopsis Nyl. Thallus granulato-areolate ; gonimia simple 

 or nodulose : apothecia lecanorine, with articulate paraphyses and 

 simple spores ; spermogones with simplish sterigmata and minute 

 oblong spermatia. 



4. Pyrenopsis Nyl. Thallus granulato-areolate or subsquamu- 

 lose ; gonimia simple or nodulose : apothecia pseudo-pyrenocarpous, 

 with simple paraphyses and spores; spermogones with simplish 

 sterigmata and minute oblong spermatia. 



Tribe III. HOMOPSIDEI Nyl. Thallus either fruticulose, with 

 seriate gonimia; or squamuliform or granulose, with subsolitary 

 gonimia : apothecia pyrenocarpous. 



Subtribe EPHEBEI NyJ. Thallus fruticulose, intricate, dioe- 

 cious or monoecious ; gonimia nodulose : apothecia pyrenocarpous, 

 with or without paraphyses. 



5. Ephebe Fr. Thallus dioecious ; gonimia 24 in each nodule : 

 apothecia in thalline incrassations, with simple or 1-3-septate spores 

 and no paraphyses ; spermogones with simplish sterigmata and 

 shortly cylindrical spermatia. 



