New Zealand Journal of Botany abstracts
B99050Received 1 October 1999; accepted 31 August 2000
Sophora (Fabaceae) in New Zealand: taxonomy, distribution, and
biogeography
P. B. HEENAN
Landcare Research
P.O. Box 69
Lincoln, New Zealand
P. J. DE LANGE
Science & Research Unit
Department of Conservation
Private Bag 68908
Newton
Auckland, New Zealand
A. D. WILTON
Landcare Research
P.O. Box 69
Lincoln, New Zealand
Abstract A taxonomic treatment is provided for the
Sophora
microphylla complex in New Zealand.
Sophora microphylla sens.
str
. is endemic to New Zealand, and includes those plants with a
distinct divaricating and/or strongly flexuose juvenile phase, orange-brown to
yellow-brown juvenile stems, and distant leaflets.
S. chathamica is
reinstated at species rank,
S. fulvida is a new combination provided for
the taxon previously known as
S. microphylla var.
fulvida, and
S. godleyi and
S. molloyi are described as new species.
S.
chathamica,
S. fulvida,
S. godleyi, and
S. molloyi
lack a divaricating and/or strongly flexuose juvenile phase and are each
distinguished by a number of leaf characters.
S. fulvida and
S.
godleyi have distinctive leaf hairs.
S. chathamica is a
predominantly coastal species in Northland, Auckland, Waikato, Wellington, and
the Chatham Islands,
S. fulvida occurs in Northland and North Auckland
on volcanic rock outcrops,
S. godleyi occurs on calcareous mudstone and
sandstone in eastern Taranaki, King Country, Wanganui, and Manawatu, and
S.
molloyi is restricted to extremely dry and exposed bluffs and rock outcrops
of southern North Island headlands, Kapiti Island, and several islands in Cook
Strait.
Cluster analyses of 11 leaf and 4 growth habit characters provide additional
support for the revised classification, and variation in 7 leaf characters is
evaluated with box plots. A key is provided to Sophora in New Zealand,
hybridism is discussed, an assessment of each species' conservation status is
made, and biogeography is reconsidered in view of the new taxonomic
treatment.
Keywords Fabaceae; Sophora; S. cassioides;
S. chathamica; S. fulvida; S. godleyi; S.
longicarinata; S. microphylla; S. microphylla var.
fulvida; S. molloyi; kowhai; taxonomy; biogeography;
conservation; New Zealand flora
New Zealand Journal of Botany, 2001, Vol. 39: 17-54
0028-825X/00/3901-0017 $7.00 (c) The Royal Society of New Zealand 2001
PDF file of entire paper: medium quality (7658K); (scanned from paper original: notes about this process)
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