(29) 
P. crossophylla, Tuck., 
P. molybaaea, Pers ., var. cronia, Tuck. 
(, Southern specimens in fruit,) 
P. nigra, ( Huds .) Nyl. 
P. byssina, ( Hojfm .) Tuck., 
S. 111. 
Fulton, Johnson. 
Fulton, Menard, S. 111. 
Fulton, Menard. 
COLLEMEI. 
E. pubescens, Fr., 
S. schaereri, Mass., 
S. phaeococca, Tuck., 
Ephebe, (Fr.) Tuck. 
Menard. 
Synalissa, Fr. 
Fulton, Menard, S. 111. 
Fulton. 
Collema, (Hojfm.') Fr. 
0. pycnocarpum, Nyl., 
C. cyrtaspis, Tuck., 
C. microphyllum, Ach., 
C. verruciforme, Ach., 
C. leptaleum, Tuck., 
C. flaccidum, Ach., 
C. nigrescens, (Huds.) Ach., 
C. pulposum, (Bernh.) 
var. tenax, Ach., 
C. limosum, Ach., 
C. arenosum, ( Wulf.) Schaer., 
C. pustulatum, Ach., 
Fulton, Menard, 
u a 
Menard, Union 
Menard. 
u 
Fulton, Johnson. 
Fulton, Menard. 
Fulton, Menard, Johnson. 
111 . 
Fulton, Menard. 
Menard. 
Johnson. 
Leptogium, Fr. 
L. subtile, Nyl., 
L. minutissimum, Flk 
L. lacerum, (Sw.) Fr., 
var. bolacinum, Schaer., 
L. pulchellum, (Ach.) Nyl., 
L. tremelloides, Fr., 
L. caesiellum, Tuck., ined. n. sp., 
L. chloromelum, (Sw.) Nyl., 
L. myochroum, (Ehrh.) Schaer., 
var. saturninum, (Dicks.) Tuck., 
L. dactylinum, Tuck., 
Fulton, Menard, Union. 
Menard. 
Fulton, “ 
u 
Fulton, Menard, Johnson. 
Fulton, Menard, 
u a 
u u 
S. 111. 
Johnson. 
Fulton. 
