New Zealand Journal of Botany abstracts
A molecular phylogeny for the New Zealand
Blechnaceae ferns
from analyses of chloroplast trnL-trnF DNA sequences
Lara D. Shepherd
Leon R. Perrie*
Museum
of New Zealand Te Papa
Tongarewa
PO Box 467
Wellington
6140, New Zealand
Barbara S. Parris
Fern Research Foundation
21 James Kemp Place
Kerikeri 0230, New
Zealand
Patrick J. Brownsey
Museum
of New Zealand Te Papa
Tongarewa
PO Box 467
Wellington
6140, New Zealand
*Author for correspondence.
leonp@tepapa.govt.nz
Abstract The Blechnaceae is one
of the most
speciose
fern families in New Zealand,
with two genera represented: Blechnum and Doodia. We
sequenced
the chloroplast trnL-trnF locus for all of the
Blechnaceae
species indigenous to New Zealand,
plus several non-indigenous species. Although deeper relationships were
not
well resolved by phylogenetic analyses of these DNA sequences, several
groupings of species were consistently recovered. Some of these
relationships
have been previously suspected on the basis of morphological similarity
and/or
hybridisation (e.g., the B. procerum group), and are
consistent with
variation in base chromosome numbers, but others were unexpected (e.g.,
the
relationship of B. fluviatile and B. vulcanicum). The
species of Doodia
sampled here were found to be monophyletic, and were nested within a
paraphyletic Blechnum. Infraspecific variation in the trnL-trnF
locus was detected within six New
Zealand
species, and may prove useful for future phylogeographic and taxonomic
studies.
Keywords Blechnaceae; Blechnum;
Doodia;
New Zealand; phylogeny; taxonomy; chloroplast trnL-trnF
DNA
sequences
New Zealand
Journal of Botany, 2007, Vol. 45: 67–80
0028–825X/07/4501–0067 © The Royal Society
of New Zealand
2007
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