Elaeocarpus hookerianus

  • Mataroa, Taihape, April
  • Mataroa, Taihape, April
  • Owhango. Dec 2008.
  • Owhango. Dec 2008.
  • Owhango. Dec 2008.
  • Owhango. Dec 2008.
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Species

Elaeocarpus hookerianus

Etymology

Elaeocarpus: olive-seed
hookerianus: Named after Sir Joseph Dalton Hooker (born 1817) - a world famous botanist who travelled on the Antarctic expedition of 1839 under the command of Sir James Ross and wrote "Handbook of New Zealand Flora" published in 1864-67 describing many specimens sent to Kew by collectors. He died in 1911 and has a memorial stone at Westminster Abbey London.

Common Name(s)

pokaka

Current Threat Status

2012 - Not Threatened

Previous Threat Status

2009 - Not Threatened
2004 - Not Threatened

Authority

Elaeocarpus hookerianus Raoul

Family

Elaeocarpaceae

Brief Description

Small tree with distinct small narrow glossy olive-green and brown wavy leaves to 5cm long on zig zagging interlacing branches on juvenile plants that then develop much larger adult leaves 3-11cm long by 1-3cm wide on straight erect twigs. Flowers white, lacy, drooping, in small sprays. Fruit dark purple, oval.

Flora Category

Vascular - Native

Synonyms

None

Distribution

Endemic. North, South and Stewart Islands - uncommon from Auckland north.

Habitat

Common tree of lowland to montane forests.

Similar Taxa

The juvenile and sub adult form of this species is well marked, and could only be confused with the unrelated Pittosporum turneri. It can be distinguished from that by the branches being circular rather than hexagonal, and by the more diverse array of leaf shapes, and usually by the greater preponderance of linear-lanceolate, deeply lobed or serrated leaves. In its adult stage it is somewhat similar to hinau but has much smaller, uniformly darker coloured leaves, and smaller flowers and fruits.

Flowering

October - January

Main Flower Colour

White

Other Flower Colour

Black

Fruiting

November - March (- June)

Propagation Technique

Easy from fresh fruit - though can be slow to germinate. Moderately easy in most soils, light and moisture regimes. Although it does best in a deep, moist, well mulched soil., it is rather hardy and once established is remarkably drought tolerant. Occasionally hybridises with hinau.

Threats

Not Threatened.

Chromosome No.

2n = 30

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

Where To Buy

As with hinau, pokaka is a beautifully tree which should be more widely grown. The interlacing, divaricating juvenile to sub adult growth form is quite popular with modern landscape gardeners, as such pokaka is more often sold by commercial nurseries than hinau.

   

References and further reading

Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285-309

This page last updated on 12 Sep 2014

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