z 1HE LlCHEN-FLORA 



Fam. IV. LICHENACEI. 

 r Spores pulverulent on surface of fructification. = Series I. Epi- 



CONIODEI. 



• Thallus foliolose ; apothecia terminal on podetia, biatorine. = 

 Series II. Cladodei. 



Thallus efoliolose, fruticulose or filamentose ; apothecia lecano- 

 rine.=Series III. Kamalodei. 

 - Thallus foliaceous, depressed, lobed. = Series IV. Phyllodei. 



Thallus crustaceous, squamose, radiate, granulose, powdery, or 

 evanescent. = Series V. Placodei. 



Fructification in closed receptacles. = Series VI. Pyeenodei. 



Series I. EPICONIODEI. 



Thallus horizontally expanded ; apothecia stipitate, cupuliform, 

 or sessile. = Tribe I. Caliciei. 



Thallus fruticulose, ramose; apothecia nucleiform. = Tribe II. 



SPHiEROPHOREI. 



Series II. CLADODEI. 



Thallus horizontal; apothecia substipitate. = Tribe III. ILeo- 

 mycei. 



Thallus foliaceous ; apothecia biatorine on scyphiform or simple 

 podetia. = Tribe IV. Cladoniei. 



Thallus csespitose, podetiiform ; apothecia terminal or lateral, 

 lecideine. = Tribe V. Stereocatjlei. 



Series III. EAMALODEI. 

 Thallus branched, white; apothecia lateral. = Tribe VI. Koo- 



CELLEI. 



Thallus podetiiform ; apothecia unknown. = Tribe VII. Siphulei. 



Thallus branched, terete, or compressed, medullary axis firm ; 

 apothecia peltate. = Tribe VIII. Usneei. 



Thallus branched, round or compressed, medullary axis woolly ; 

 apothecia lateral or terminal. = Tribe IX. Kamalinei. 



Thallus compressed, fruticulose or membranously dilated; apo- 

 thecia marginal. = Tribe X. Cetrariei. 



Series IV. PHYLLODEI. 



Apothecia peltiform. = Tribe XI. Peltigerei. 



Apothecia marginal, on under side of thallus. = Sub- 

 tribe 1. Nephromei. 



Apothecia marginal, on upper side of thallus. = Sub- 

 tribe 2. Peltidei. 



Apothecia not marginal, innate. = Sub-tribe 3. Solorinei. 

 Apothecia lecanorine. = Tribe XII. Parmeliei. 



