Species

Olearia allomii

Etymology

Olearia: Derived from the latinised name (Olearius) of the 17th century German botanist Adam Oelenschlager

Common Name(s)

Great Barrier Tree Daisy

Current Conservation Status

2012 - At Risk - Naturally Uncommon

Conservation status of New Zealand indigenous vascular plants, 2012
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2012 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2009 and replaces all previous NZTCS lists for vascular plants. Authors: Peter J. de Lange, Jeremy R. Rolfe, Paul D. Champion, Shannel P. Courtney, Peter B. Heenan, John W. Barkla, Ewen K. Cameron, David A. Norton and Rodney A. Hitchmough. File size: 792KB

Previous Conservation Status

2009 - At Risk - Naturally Uncommon
2004 - Range Restricted

Qualifiers

2012 - IE, RR
2009 - OL, IE

Authority

Olearia allomii Kirk

Family

Asteraceae

Brief Description

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.

Flora Category

Vascular - Native

Structural Class

Dicotyledonous Trees & Shrubs

Synonyms

None

Distribution

Endemic. Known only from Great Barrier Island.

Habitat

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

Flowering

(September-) October (-December)

Flower Colours

White

Fruiting

(October-) December (-April)

Propagation Technique

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.

Threats

Not threatened but a very uncommon endemic, confined largely to the rhyolitic and dacitic rocks of the central portion of Great Barrier Island

Chromosome No.

2n = 108

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

 

    

This page last updated on 6 Dec 2014