Species

Weinmannia racemosa

Etymology

Weinmannia: Named after Johann Wilhelm Weinmann (13 March 1683 - 1741) who was a Germany apothecary and botanist and is noted for his creation of the florilegium Phytanthoza iconographia between 1737 and 1745
racemosa: raceme bearing

Common Name(s)

kamahi, tawheo, tawhero, tawherowhero

Current Conservation Status

2012 - Not Threatened

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 - Not Threatened
2004 - Not Threatened

Authority

Weinmannia racemosa L.f.

Family

Cunoniaceae

Brief Description

Tree to small shrub, young stems bearing deciduous stipules, leaves variable but as adults most simple, with deeply toothed margins, flowers white or pink, clustered in spike-like racemes

Flora Category

Vascular - Native

NVS Species Code

WEIRAC

The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.

Structural Class

Dicotyledonous Trees & Shrubs

Synonyms

Fact Sheet Under Development

Distribution

Endemic. North, South, Stewart Island. The exact northern limits of Weinmannia racemosa are uncertain but probably lie somewhere along the Manukau Harbour and Hunua Ranges across the Kamai Range. North of here the distinction between Weinmannia racemosa and W. silvicola is often confused. This needs further study.

Habitat

Coastal to subalpine. A widespread and common tree of disturbed habitats in coastal and lowland to montane forest, often becoming locally dominant in higher altitude montane forest in the higher ranges of the North Island and western South Island.

Features

Tree up to 28 m tall often forming a narrowly domed canopy (but this will vary according to local conditions). Trunk up to 1.2 m diameter. Branches numerous, erect to spreading, Foliage heterophyllous. with distinct seedling, juvenile and adult leaves (reversion shoots common). Stipules caducous, 3-6 mm long, lanceolate, finely pubescent, yellow-green to pinkish. Seedling and juvenile leaves membranous to subcoriaceous, 10-60 × 10-30 mm; lamina simple to 3-lobed or 3-foliolate, ovate-elliptic to elliptic or lanceolate, apices subacute to acute, margins serrate to incised-serrate; adult leaves coriaceous, on petioles up to 20 cmm long, lamina 30-100 × 20-40 mm lamina simple, elliptic, ovate-elliptic to broad-ovate, apices obtuse to subacute, margins rather coarsely, bluntly serrate. Inflorescences in racemose; racemes 60-1140 mm long, rachises and pedicels finely, pilose-pubescent; pedicels 2-4 mm long, clustered, ascending to spreading. Sepals 1.0-1.5 mm. long, ovate, persistent; petals 4(-5), 2-3 mm long, ovate-oblong, white, cream or pale pink; stamens 8-10, exserted, filaments up 10 mm long, white or pinkish white, anthers 0.2-0.3 mm diameter, cream; nectaries 8, red; ovary, narrowly ovoid 0.8 mm diameter, covered in appressed hairs, carpels 2, free almost to base. Styles 3-4 mm long, pale pink, persistent; stigma 0.2-0.4 mm, pink or pale pink, punctate. Fruit a pubescent, broadly cylindrical capsule 4.0-5.8 x 2.7-3.1 mm, initially greyish drying honey-brown or dark brown. Seeds numerous, 1.0-1.5 mm long, narrowly elliptic to elliptic-oblong, orange-brown, apices bearing dense hair tufts, otherwise glabrous.

Similar Taxa

Fact Sheet Under Development

Flowering

July - January

Flower Colours

White

Fruiting

October - May

Propagation Technique

Easily grown from fresh seed. Can also be grown from semi-hardwood cuttings. This is an attractive tree tolerant of a wide range of conditions and soil types though it does best in high light, and in free-draining soil. The flowers are very attractive to a range of insects and birds

Threats

Not Threatened

Chromosome No.

2n = 30

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

 

 

Attribution

Fact sheet prepared for NZPCN by P.J. de Lange (13 October 2012). Description prepared by P.J. de Lange.

References and further reading

McKenzie, R. 1960. The distributional overlap of Weinmannia sylvicola andWeinmannia racemosa. Auckland Botanical Society Journal, 17: 7-8

This page last updated on 6 Dec 2014