Lichenes. 



U S N A C E AE . 



RAMALINA Ach. 

 R. RiGiDA (Pers.) Tuck. 



On trees, alt. 2,000 ft. {Nuttall, 1060). 



R. CALCICARIS FASTIGIATA Fr. 



On trees, alt. 2,000 ft. {Nuttall, 869). 

 R. MINIUSCULA Nyl. 



On Acer saccharinum, alt. 2,000 ft. {Nuttall, 1696). 



CETRARIA Ach. 

 C. ciLiARis (Ach.) Tuck. 



On Pinns Virginiana, alt. 1,800 ft. {Nuttall, 861). 



C. LACUNOSA Ach. 



On Finns Virginiana, alt. 1,800 ft. {Nuttall, 1053). 



C. AURESCENS Tuck. 



On Rhododendron maximum, alt. 1,850 ft. {Nuttall, 1050). 

 C. ISLANDICA (L.) Ach. Reindeer Moss. 



High barren places, Wood: near Nicollet {H. H. Smith). 

 C. Oakesiana spinulosa Merrill ined. 



On Picea rubens {Sheldon, 3699), and on Kalmia latifolia 

 (3661). 



USNEA Ach. 



U. B AREATA (L.) Fr. 



Wirt Co., on old trees, common, Burning Springs. Ran- 

 dolph Co., on Rhododendron maximum, common, Cheat 

 Bridge. Mercer Co., on oak twigs, Bluefield ; and elsewhere 

 about State, common on trees, rocks and old fence rails 

 {Millspaugh). On trees, alt. 2,000 ft. {Nuttall, 819). 



U. BARBATA FLORIDA Fr. 



Mercer Co., on oak chips and twigs among dead leaves at 

 Bluefield {Millspaugh). On trees, alt. 2,000 it. {Nuttall, 

 859)- 



U. TRICHODES Ach. 



On spruce {Sheldon, 3693). 



THELOSCHISTES Norm. 

 T. PARIETINUS (Linn) Norm. 



On Robinia Pscndacacia, alt. 2,000 ft. {Nuttall, 1145). 



