Rolfs — Florida Lichens. 31 



61. Thelotrema glaucescens, Nyl. 



Rare. On hickory. 

 ^2. Thelotrema iNTERPOSiTUM, (Nyl.) Tuck. 



On oak; pine; Gordonia. 



63. Thelotrema subtile, Tuck. 



Abundant. On Carpinus; Cornus florida. 



Gyrostomum. 



64. Gyrostomum scyphuliferum, (Ach.) Fr. 



Very common. On oak; persimmon; Carpinus; 

 mulberry; pear ; hickory ; wild cherry: Xanthoxylum ; 

 Myrica; crape myrtle; chinquapin oak. 



Myriangium. 



65. Myriangium duriaei, (M. & B.) Tuck. 



On thorny locust; blue gum. 



TRIBE LECIDEACEI. 

 Family Cladoniei. 



Cladonia. 



^^. Cladonia fimbri ATA, (L.) Fr. 



Common. On saw palmetto; cabbage palmetto; pine 

 log; pine stump; dead live-oak; magnolia; dead pine. 



67. Cladonia gracilis, (L.) Nyl. 



On pine log. 



68. Cladonia gracilis, var. reticulata, Fr. 



On sand. 



69. Cladonia leporina, Fr. 



On sand; old pine roof; pine stump ; saw palmetto. 



70. Cladonia macilenta, (Ehrh.) Hoffm. 



On old pine stump. 



71. Cladonia mitrula. Tuck. 



On oak; dead live-oak; damp earth. 



72. Cladonia pulchella, Schw. 



On dead pine. 



73. Cladonia rangiferina, var. alpestris, L. 



On old pine roof; sand. 



