T.E.R:R.A.I.N - Taranaki Educational Resource: Research, Analysis and Information Network


Coprosma grandifolia (Kanona)

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Gentianales
Family: Rubiaceae
Subfamily: Rubioideae
Tribe: Anthospermeae
Genus: Coprosma
Species: C. grandifolia
Binomial name: Coprosma grandifolia
Synomyn: Coprosma australis
Common names: Kanona, Rauekau,  Manono, Large-leaved coprosma,

Coprosma grandifolia is a native shrub or small tree with male and female flowers on separate trees. It has a slender trunk and hairless branches or branchlets. It’s widespread in both the North and South Islands in lowland to mid-montane forest in wet and shaded areas, often around creeks where it can grow to 6 metres high. It is common on alluvial soils and often abundant in bush remnant regrowth after fencing. It can be epiphytic on tree fern trunks.
It has the largest leaves (15 cm long or more) of any New Zealand coprosma. The oval leaves have a raised midrib on the upper surface and there are domatia on the underside. The leaves have a distinct vein pattern often there is a mottled appearance on the leaf's top surface.
C. grandifolia produces ripe orangey-red drupes between February and May, and then flowers again during spring.
The tree’s inner bark is a vivid yellow/orange colour and was used as a dye by the early Maoris. Prepared bark was an important source of topical medicine for the Maoris.
For more information of the use of by Maoris visit:
http://maoriplantuse.landcareresearch.co.nz/WebForms/PeoplePlantsDetails.aspx?firstcome=firstcome&PKey=CAF19704-4282-4D92-894A-9D31F03A921D

For more details visit:
http://wwwold.landcareresearch.co.nz/research/biosystematics/plants/coprosmakey/key/Coprosma/Media/Html/C_grandifolia.htm



Male tree with flowers


Male flower buds.


The flowers opening.






A few fruit on a female tree. The leaves are showing the distinctive mottled appearance.






The leaves. Note the raised midrib.


The underside of a leaf. NB. small pits at junction of veins

A photo of a glandular stipule (a small leaf like outgrowth occurring at the base of a leaf) and the characteristic dark red blotches on it and the branch.


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