Rolfs — Florida Lichens. 33 



Heterothecium . 



92. Heterothecium domingense, (Pers.) Flot. 



On magnolia; Carpinus; hickory; Liquidambar ; 

 water oak. 



93. Heterothecium leucoxanthum, (Spreng.) Mass. 



Common. On hickory; magnolia; Cornus florida; 

 oak; black oak; Ilex opaca; linden; mulberry; willow 

 oak ; Liquidambar . 



94. Heterothecium tuberculosum, (Fee) Flot. 



On magnolia. 



95. Heterothecium vulpinum, Tuck. 



Abundant on magnolia. 



Lecidea . 



96. Lecidea disciformis, Nyl. 



On plum ; magnolia ; wild cherry ; blue gum ; live-oak ; 

 chinquapin oak. 



BUELLIA. 



97. Buellia myriocarpa, (DC.) Mudd. 



Common. On Myrica. 



98. Buellia parasema, (Ach.) Th. Fr. 



Common. On dead pines ; on dead cypress ; mulberry ; 

 cypress ; magnolia ; Myrica ; hickory ; scrub oak ; Bejaria. 



TRIBE GRAPHIDIACEI. 

 Family Lecanactidei. 



Plattgrapha. 



99. Platygrapha ocellata, Nyl. 



Very rare. On Carpinus. 



Family Opegraphei. 



Opegrapha. 



100. Opegrapha astraea, Tuck. 

 On linden. 



