VI 
Tuckerman. Hawaiian Lichens, 1867. 
Genera Lichenum, 1872. 
Synopsis Lichenum, P. II, 1888. 
Wainio. Adjumenta ad Licli. Lapp, et Fenn P. II, 1883. 
Willey. Suppl. to Introd. to the Study of Lichens, 1887. 
Zwach . Heidelberg Lichens, 1883. 
EXSICCATE 
Lojka. Lichenotheca Universalis, Fasc. 1-5. 
Lichenes Hungarici Regni. 
Norrlin & Nylander. Herbar. Lich. Fenmas, n. 1-450. 
Tuckerman herbarium. 
Willey herbarium. 
Wright Lichens Cubani. 
