Kingdom: Plantae
(Unranked): Angiosperms
(Unranked): Eudicots
(Unranked): Rosids
Order: Oxalidales
Family: Elaeocarpaceae
Genus: Elaeocarpus
Species: E. hookerianus ( it will hybridise with Elaeocarpus dentatus)
Binomial hybridised name; Elaeocarpus dentatus x hookerianus 
Scientific name: Elaeocarpus dentatus x hookerianus 
Common name: Elaeocarpus dentatus x hookerianus 'Moana'

Elaeocarpus hookerianus is a small tree up to 15m tall but the trunk can be up to a 1 m or more in diameter. It is cold tolerant and can be found a higher altitude that Elaeocarpus dentatus (Hinau). It also inhabits the cold valley floors. It is found throughout New Zealand and also on Stewart Island. Both Elaeocarpus species grow on Mt Taranaki/Egmont. It has a distinct juvenile form which is a much branched interlaces shrub with very small leaves. They may be brown to almost white and can vary in shape. Adult leaves are green and toothed.
This plant will hybridise with Elaeocarpus dentatus (Hinau).

The photos below are of Elaeocarpus dentatus x hookerianus (‘Moana’)

Photographed at Otari Native Botanic Garden and Wilton's Bush Reserve. Wellington.
Elaeocarpus dentatus x hookerianus Moana . 216 .JPG

Elaeocarpus dentatus x hookerianus Moana-002.JPG

Top surface of an adult leafElaeocarpus dentatus x hookerianus Moana-003.JPG

The underside of an adult leaf.
Elaeocarpus dentatus x hookerianus Moana-007.JPG 

The trunk.
Elaeocarpus dentatus x hookerianus Moana . 215 .JPG  

Thanks to Wikipedia for text and information http://creativecommons.org/licenses/by-sa/3.0/