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Pittosporum serpentinum (de Lange) de Lange (Pittosporaceae), a new species combination for an ultramafic endemic from North Cape, New Zealand P. J. De Lange
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Science & Research Unit, Department of Conservation , Private Bag 68908, Newton, Auckland, New Zealand E-mail: Published online: 17 Mar 2010.
To cite this article: P. J. De Lange (2003) Pittosporum serpentinum (de Lange) de Lange (Pittosporaceae), a new species combination for an ultramafic endemic from North Cape, New Zealand, New Zealand Journal of Botany, 41:4, 725-726, DOI: 10.1080/0028825X.2003.9512883 To link to this article: http://dx.doi.org/10.1080/0028825X.2003.9512883
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New Zealand Journal of Botany, 2003, Vol. 41: 725-726 0028-825X/03/4104-0725 $7.00 © The Royal Society of New Zealand 2003
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Pittosporum serpentinum (de Lange) de Lange (Pittosporaceae), a new species combination for an ultramafic endemic from North Cape, New Zealand P. J. de LANGE Science & Research Unit Department of Conservation Private Bag 68908 Newton Auckland, New Zealand Email:
[email protected] Abstract A new combination at the rank of species for Pittosporum ellipticum subsp. serpentinum is made. The species is distinguished from P. ellipticum sens. str. by its smaller stature, smaller vegetative parts, fewer seeds, distinctive seed morphology, and restriction to ultramafic rocks. Keywords Pittosporaceae; Pittosporum serpentinum; P. ellipticum; P. ellipticum subsp. serpentinum; P.fairchildii; P. ralphii; New Zealand flora
INTRODUCTION De Lange (1998) recognised a new subspecies, Pittosporum ellipticum subsp. serpentinum, as endemic to the serpentinised peridotite rocks of the Surville Cliffs portion of the North Cape Peninsula. In that paper it was stated that "the rank of subspecies is conservatively chosen in preference to that of species, because it has not yet been conclusively determined whether these admittedly minor morphological differences are genetic or result from the influence of the ultramafic substrate on which it [P. ellipticum subsp. serpentinum] naturally grows". In particular, I was then concerned with the fact that so few plants had been seen (
