Great Barrier tree daisy
Vascular – Native
Trees & Shrubs - Dicotyledons
2n = 108
Current conservation status
The threat classification status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.
2017 | At Risk – Naturally Uncommon | Qualifiers: DP, IE, RR
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: IE, RR
2009 | At Risk – Naturally Uncommon | Qualifiers: OL, IE
2004 | Range Restricted
Shrub bearing broad dished leathery leaves that are white underneath and with large clusters of white flowers inhabiting Great Barrier Island. Twigs fuzzy white. Leaves 2.5-5cm long by 2-4cm wide, on a thick white stalk.
Endemic. Known only from Great Barrier Island.
Virtually confined to open shrubland, cliff, and rock outcrops and associated boulderfield. Only abundant on rhyolitic, dacitic rocks and their associated skeletal soils. In some locations it has extended off these onto andesitic soils and rocks but those populations seem to result from past forest disturbance and are not thriving
(September-) October (-December)
(October-) December (-April)
Easy from fresh seed and cuttings but rather hard to maintain in cultivation. Seems to do best in free draining sandy, infertile soils. Good in a pot. Dislikes over watering, humidity and needs full sun.
Not threatened but a very uncommon endemic, confined largely to the rhyolitic and dacitic rocks of the central portion of Great Barrier Island
olearia: Named after Johann Gottfried Olearius, a 17th-century German scholar, writer of hymns and author of Specimen Florae Hallensis