American Fern Journal
AMERICAN FERN JOURNAL QUARTERLY JOURNAL OF THE AMERICAN FERN SOCIETY Broad-Scale Integrity and Local Divergence in the Fiddlehead Fern Matteuccia struthiopteris (L.) Todaro (Onocleaceae) DANIEL M. KOENEMANN Rancho Santa Ana Botanic Garden, 1500 North College Avenue, Claremont, CA 91711-3157, e-mail: daniel.koenemann@gmail.com JACQUELINE A. MAISONPIERRE University of Vermont, Department of Plant Biology, Jeffords Hall, 63 Carrigan Drive, Burlington, VT 05405, e-mail: jmaisonp@gmail.com DAVID S. BARRINGTON University of Vermont, Department of Plant Biology, Jeffords Hall, 63 Carrigan Drive, Burlington, VT 05405, e-mail: dbarring@uvm.edu American Fern Journal 101(4):213–230 (2011) Broad-Scale Integrity and Local Divergence in the Fiddlehead Fern Matteuccia struthiopteris (L.) Todaro (Onocleaceae) DANIEL M. KOENEMANN Rancho Santa Ana Botanic Garden, 1500 North College Avenue, Claremont, CA 91711-3157, e-mail: daniel.koenemann@gmail.com JACQUELINE A. MAISONPIERRE University of Vermont, Department of Plant Biology, Jeffords Hall, 63 Carrigan Drive, Burlington, VT 05405, e-mail: jmaisonp@gmail.com DAVID S. BARRINGTON University of Vermont, Department of Plant Biology, Jeffords Hall, 63 Carrigan Drive, Burlington, VT 05405, e-mail: dbarring@uvm.edu ABSTRACT.—Matteuccia struthiopteris (Onocleaceae) has a present-day distribution across much of the north-temperate and boreal regions of the world. Much of its current North American and European distribution was covered in ice or uninhabitable tundra during the Pleistocene. Here we use DNA sequences and AFLP data to investigate the genetic variation of the fiddlehead fern at two geographic scales to infer the historical biogeography of the species. Matteuccia struthiopteris segregates globally into minimally divergent (0.3%) Eurasian and American lineages.
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