382 HERRE 



sometimes greenish lead-color. Apothecia scattered, becoming 

 very numerous and crowded, concolorous or red-brown ; the 

 paler elevated margin entire. Spores '^ mic, muriform-multi- 

 locular. 



On earth, mosses, and rocks ; often occurring in very exten- 

 sive tufted patches. Abundant. 



Lichen fahnattis Hudson, Fl. Ang. ed. 2. 536. 1778. 

 Leftogimn fahnatwn Montague, PI. Cell. Voy. Pol. Sud, 128. 



1845. 



6. LEPTOGIUM CHLOROMELUM STELLANS Tuck. 



Thallus orbicular, becoming indeterminate, medium to very 

 large, more or less fenestrate, laciniate ; lobes usually narrow, 

 irregular, more or less imbricate or coalescing ; surface striate, 

 wrinkled, and ridged, the ridges densely covered with black 

 isidiose granules, or by cristate-lacerate isidiose lobules ; color 

 dark green, plumbeous, or black ; beneath paler, wrinkled ; 

 rarely a very minute down sparingly present. 



Sterile. 



On trees. Common ; reaching its maximum development at 

 an altitude of from 500 to 800 feet, the loosely connected 

 thallus often 4 or 5 inches in diameter. 



Lichen chloronielos Swartz, Fl. Ind. Occident. 3 : 1892. 1806. 

 Leptogiuni chloromehmi Nyl. Syn. Meth. Lich. i : 128. i860. 

 Leftogitun chloromeliim stellans Tuck. Syn. N. Am. Lich. i : 



163. 1882. 



7. LEPTOGIUM SATURNINUM (Smith) Schaer. 



Thallus large, orbicular, one-leaved or polyphyllous and im- 

 bricate ; the long, irregular, sinuate lobes rounded at the tips ; 

 their margins upturned, more or less convolute and elevated ; 

 sometimes with finely laciniate edges, margined with isidiose 

 granules ; upper surface varying from smooth to granular or 

 finally densely isidiose granulate ; color plumbeous to greenish 

 black, with usually a more or less evident metallic rufous or 

 bronze lustre ; granules, when present, brownish black ; be- 

 neath paler, finely wrinkled ; covered with a white or brown 

 fleece, tliis becoming interruptedly long and shaggy. Sterile. 



On trunk of trees ; abundant throughout. 



