Rolfs — Florida Lichens. 39 



164. Pyrenula fall ax, Nyl. 



Common. On Xanthoxylum ; plum; blue gum. 



165. Pyrenula gemmata, Ach. 



On Garpinus; hickory. 



166. Pyrenula glabrata, Ach. 



On hickory ; oak; pear; linden. 



167. Pyrenula mamillana, Ach. 



On Garpinus; linden; Ilex opaca; wild cheny ; 

 Myrica; magnolia. 



168. Pyrenula nitida, Ach. 



On oak stump ; chinquapin oak ; Myrica ; willow oak ; 

 water oak; linden. 



169. Pyrenula ochraceo-flava, Nyl. 



On mulberry; live-oak. 



170. Pyrenula punctiformis, Ach. 



On Xanthoxylum; Pinus clausa; hickory. 



171. Pyrenula quinque-sept at a, (Nyl.) Tuck. 



On Myrica. 



172. Pyrenula subprostans, (Nyl.) Tuck. 



Common. On oak. 



173. Pyrenula tropica, (Ach.) Tuck. 



Rare. On mulberry; hickory; pear. 



Pyrenastrum. 



174. Pyrenastrum astroideum, (Fee) Eschw. 



On magnolia; Ilex opaca; hickory; wild cherry. 



175. Pyrenastrum ravenelii, Tuck. 



On linden. 



Strigula. 



176. Strigula complanata, (Fee & Mont.) Nyl. 



On magnolia leaves. 



Issued March 16, 1901. 



