26 Trans. Acad. Sci. of St. Louis. 



A rather full annotation of the habitats is given with a view 

 of stimulating amateur collecting and thus securing larger rep- 

 resentation of the Lichen flora. For this reason the common 

 name, if specific enough, has been given preference.* 



SERIES GYMNOCARPI. 



TRIBE PARMELIACEI. 

 Family Usneei. 



Ramalina. 



1. Ramalina rigida, (Pers.) Nyl. 



Common on dead oak. 



2. Ramalina rigida, var. montagnaei, Tuck. 



On water oak. 



Usnea. 



3. Usnea barbata, (L.) Fr. 



On palmetto; cypress; persimmon. 



4. Usnea barbata, var. Florida, Fr. 



On dead cypress ; water oak; scrub oak. 



5. Usnea barbata, var. hirta, Fr. 



Family Parmeliei. 



Parmelia. 



6. Parmelia cetrata, Ach. 



Common on pine stump; dead cedar; cypress. 



7. Parmelia crinita, Ach. 



Common on dead oak. 



* The following annotations may be of service: Gum, Nyssa; pine 

 stump, P. palustris; persimmon, Diospyros; pear, Pyrus communis; mul- 

 berry, Morus rubra; hickory, Carya; pine, Pinus; chinquapin oak, Q. pri- 

 noides; oak, Quercus; plum, Primus (cultivated) ; linden Tilia sp.; thorny 

 locust, Gleditschia triacanthos; wild cherry, Prunus serotina; live-oak, 

 Q. virens; magnolia, M. grandiflora; palmetto, Sabal, Serenoa; cypress, Tax- 

 odium; willow oak, Q. Phellos; scrub oak, Q. sp.; saw palmetto, Serenoa 

 serrulata; black oak, Q. tinctorial; crape myrtle, Lagerstroemia Indica; red 

 oak, Q. rubra?; blue gum, Nyssa aquatica; red cedar, Juniperus Virginiana. 



