28 Trans. Acad. Sci. of St. Louis. 



Family Peltigerei. 



Sticta. 



23. Sticta AURATA, (Sw.) Ach. 



On magnolia. 



24. Sticta quercizans, (Michx.) Ach. 



On magnolia; Crataegus; red oak. 



Family Pannariei. 



Pannaria. 



25. Pannaria MOLYBDAEA, (Pers.) Tuck. 



Not common. On crape myrtle; red cedar; dead 

 live-oak ; water oak ; Carpi aus ; scrub oak ; magnolia ; 

 persimmon; Andromeda. 



26. Pannaria rubiginosa, (Thunb.) Delis. 



Abundant. On red oak ; black oak; Andromeda, 



27. Pannaria stellata, (Tuck.) Nyl. 



Abundant. On Carpinus, 



Family Collemei. 



COLLEMA. 



28. Collema aggregatum, Nyl. 



Abundant. On dead cypress ; scrub oak. 



29. Collema nigrescens, Fr. 



Common. On hickory. 



30. Collema nigrescens, var. leucopepla, Tuck. 



On linden. 



Leptogium. 



31. Leptogium marginellum, (Sw.) Mont. 



On red cedar; linden; Carpinus; oak; mulberry; 

 Liquidamhar. 



32. Leptogium myochroum, (Ehrh.) Tuck. 



On sassafras. 



33. Leptogium myochroum, var. saturninum, Schaer. 



34. Leptogium PULCHELLUM, (Ach.) Nyl. 



On Cornus florida ; Carpinus; linden. 



