Some dicotyledonous plants recently collected in the Hawaiian Islands Earl Edward Sherff Erratum Pages: 45 - 45
Observations on Pseudobryopsis and Trichosolen (chlorophyceae-bryopsidaceae) in America Wm. Randolph Taylor OriginalPaper Pages: 58 - 65
The North American mesquites Prosopis Sect. Algarobia (Leguminosae) Marshall C. Johnston OriginalPaper Pages: 72 - 89
Dryopteris in the Huron mountain club area of Michigan W. H. WagnerDale J. Hagenah OriginalPaper Pages: 90 - 100
Segregate genera of the Lepidozia complex (Hepaticae) Part 3. Microlepidozia Jörg. and Micrisophylla gen. Nov. Margaret Fulford OriginalPaper Pages: 121 - 136