1. Hepaticae collected in Cuba and Hispaniola by E. L. Ekman;Arnell S.;Bryologist,1956
2. New species of Asterella and Riccia from Sto. Domingo and Cuba;Arnell S.;Bryologist,1958
3. The genus Calypogeja Raddi in Central and South America I. Introduction and subgenera Mnioloma and Caracoma. II. Subgenus Calypogeja, subgroups 1, 2 and 3;Bischler H.;Candollea,1962
4. Le genre Drepanolejeunea Steph. en Amérique Centrale et Méridionale;Bischler H.;Rev. Bryol. Lichénol.,1964
5. Le genre Drepanolejeunea Steph. en Amérique Centrale et Méridionale. II;Bischler H.;Rev. Bryol. Lichénol.,1967