Editor's Preface vii

Applications of Enzyme Electrophoresis to Bryophyte Systematics and
Population Biology, by Ann Stoneburner, Robert Wyatt & Ireneusz
J. Odrzykoski 1

Ecological Genetics, Evolutionary Constraints, and the Systematics of
Bryophytes, by A. Jonathan Shaw 29

The Secondary Chemistry of the Marchantiales, by Alan T. Whittemore 75

Laboratory and Greenhouse Cultures and the Experimental Taxonomy
of Bryophytes, by Cyrus B. McQueen 103

The Use of Ontogenetic Data in Phylogenetic Analyses of Mosses, by
Brent D. Mishler & Efrain De Luna 121

The Basis for Familial Classification of Pleurocarpous Mosses, by
William R. Buck 169

Electronic Data Processing in Bryological Research, Especially Systematics,
by Robert E. Magill 187

Phylogenetic Connections Between the 'Green Algae' and the 'Bryophytes,'
by Linda E. Graham, Charles F. Delwiche & Brent D. Mishler 213

Epilogue: Some Thoughts on the Inadequacies of Bryophyte Taxonomy,
by Howard Crum 245