162 PRELIMINAEY CATALOGUE OP PLANTS. 



Peltigera, (Willd., Hoffm.,) Fee. 

 P. aphthosa, Hoflfm. 

 P. canina, Hoffm. 



Var. spuria, Ach. 

 P. polydactyla, Hoflfm. 

 P. rufescens, Hoflfm. 

 P. horizontalis, Hoffm. 

 P. venosa, Hoffm. 



Pannaria, (Del.,) Tuckm. 



P. lanuginosa, (Ach.,) Kbr. 



P. lurida, Nyl. 



P. microphylla, (Sw.,) Del. 



P. leucosticta, Tuck. 



P. molybdasa, Pers. 



Var. cronia, Nyl. Sussex Co. 

 P. nigra, (Huds.,) Nyl. 

 P. byssina, (Hoffm.,) Tuck. 



Bphebe, Fries., Born. 



B. pubescens, Fr. 



E. minor, Willey in litt. 



Collema, (Hoflfm.,) Fries., Flot. 



C. myriococcum, (Ach.,) Nyl. Sussex Co. 

 C. pycnocarpum, Nyl. 



O. cyrtaspris, Tuck. 



C. microphyllum, Ach. 



C. verruciforme, Nyl. 



O. leptaleum, Tuck. • 



C. flaccidum, Ach. 



C. nigrescens, (Huds.,) Ach. 



C. ryssoleum. Tuck. 



C. pulposum, Ach. 



C. furvum, Ach., Nyl. 



Leptogium, Fries., Nyl. 

 L. subtile, Nyl. 

 L. lacerum, (Sw.,) Fr. 

 L. pulchellum, Ach., Nyl. 

 L. tremelloides, Fr. 

 L. chloromelum, (Sw.,) Nyl. 

 L. myochroum, (Ehrh., Schrser.) 

 Var. saturninum, (Dicks.,) Tuck. 



