New Zealand Journal of Botany abstracts
Molecular relationship of Hymenophyton species (Metzgeriidae,
Hepaticophytina) in New Zealand and Tasmania. Studies in austral temperate rain
forest bryophytes 5
TANJA PFEIFFER
Freie Universität Berlin
Fachbereich Biologie, Chemie, Pharmazie
Institut für Biologie
- Systematische Botanik und Pflanzengeographie -
Altensteinstraße 6
D-14195 Berlin, Germany
Abstract The infrageneric relationship in
Hymenophyton
is studied based on a sequencing of the
trnLUAA intron of chloroplast
DNA of New Zealand and Tasmanian specimens. The molecular data strongly support
the existence of at least two species, including
H. flabellatum and
H. leptopodum. These species, already recognised as distinct in
phytochemical studies, but nevertheless often regarded as synonyms due to
morphological similarities, are readily identified by the differences in the
analysed intron sequences. Two indels and at least six substitutions
differentiate between specimens of
H. flabellatum and
H.
leptopodum. Within
H. flabellatum and within New Zealand
H.
leptopodum, the homologies in the sequence of the
trnL intron are
great (>99%) and no molecular divergence patterns can be detected. Possible
intraspecific relationships between the analysed specimens of both taxa are
discussed.
Keywords Hymenophyton; Hymenophytaceae; Metzgeriidae;
Hepaticophytina; chloroplast DNA (cpDNA); trnLUAA intron; interspecific
relationships; molecular systematics
B99018
Received 5 May 1999; accepted 11 October 1999
PDF file of entire paper: medium quality (626K); (scanned from paper original: notes about this process)
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