New Zealand Journal of Botany abstracts
Olearia quinquevulnera (Asteraceae: Astereae), a new
species name from New Zealand, and observations on its relationships in
Olearia
P. B. Heenan
Allan Herbarium
Landcare Research
P.O. Box 69
Lincoln, New Zealand
Abstract The holotype specimen of Olearia
capillaris is shown to represent a natural hybrid between O.
arborescens and a species of Olearia with small leaves and
flexuose branchlets. This small-leaved Olearia was previously
known as O. capillaris, but requires a new species name. It is
here formally named as O. quinquevulnera. O. quinquevulnera
occurs in small and disjunct populations in the central North Island,
NW Nelson, and North Canterbury, New Zealand.
Olearia quinquevulnera belongs with a group of Olearia
species (e.g., O. arborescens) that share T-hairs and imperfect
areole development. Another group of species (O. avicenniifolia
group) share multiseriate stellate hairs and well-developed areoles. O.
moschata is the only New Zealand species with uniseriate
stellate-dendritic hairs and imperfect areole development. Support for
the T-hair and multiseriate-stellate groups is also provided by natural
interspecific hybrids, as the multiseriate stellate and the T-hair
species mainly hybridise with other species from their respective
groups.
Keywords Asteraceae; Compositae; Astereae; Olearia;
Olearia capillaris; Olearia quinquevulnera; taxonomy;
hybrids; leaf venation; New Zealand flora
B05008; Received 25 February 2005; accepted 16 June 2005; Online
publication date 8 September 2005
New Zealand Journal of Botany, 2005, Vol. 43: 753–766
0028–825X/05/4303–0753 © The Royal Society of New Zealand 2005
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