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  4. Olearia cheesemanii

Olearia cheesemanii

Waiohine Gorge, Tararua Forest Park.<br>Photographer: Jeremy R. Rolfe, Date taken: 08/12/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Inflorescence, Karangahake Gorge (October).<br>Photographer: John Smith-Dodsworth, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Capitula. In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 14/10/2005, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Capitula. In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 14/10/2005, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Waiohine Gorge, Tararua Forest Park.<br>Photographer: Jeremy R. Rolfe, Date taken: 08/12/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 14/10/2005, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Capitula. In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 14/10/2005, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Mclaren Falls, Tauranga.<br>Photographer: Paul Cashmore, Date taken: 01/04/2005, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-sa/4.0'>CC BY-SA</a>.
Chasm Creek, West Coast.<br>Photographer: Melissa Hutchison, Date taken: 06/04/2021, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Chasm Creek, West Coast.<br>Photographer: Melissa Hutchison, Date taken: 06/04/2021, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Olearia cheesemanii.<br>Photographer: Mike Thorsen, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Olearia cheesemanii.<br>Photographer: Mike Thorsen, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Olearia cheesemanii.<br>Photographer: Mike Thorsen, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Karangahake Gorge, October 1984.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Shrub in flower, Karangahake Road.<br>Photographer: John Smith-Dodsworth, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
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Common names

streamside tree daisy, Cheeseman’s tree daisy

Biostatus

Native – Endemic taxon

Category

Vascular

Structural class

Trees & Shrubs - Dicotyledons

Simplified description

Bushy shrub bearing narrow pointed thin leathery dark green leaves that have an uneven edge inhabiting lowland stream margins. Twigs with a groove along the upper side. Leaves 5-9cm long by 2-3cm wide. Flowers white, in a loose cluster, body nearly 1cm long.

Flower colours

White, Yellow

Detailed description

Shrub or small tree 0.1-1(-4) m tall. Sparingly to heavily branched depending on growing situation, bark grey, flaking in long strips. Branchlets grooved, densely covered in buff tomentum. Petioles stout, winged, finely tomentose, up to 20 mm long. Leaves (40-)50-90 x 20-30 mm, variable in shape with all types potentially present on the one individual, usually linear to narrow-lanceolate, or oblong-lanceolate, coriaceous, margins sinuate or irregularly but distinctly toothed, apex subacuminate dark green to grey-green above, undersides clad in fine, appressed, silky-hairy, white to pale buff hairs, these darkening markedly along veins and midrib. Inflorescence a lax, much-branched corymb up to 150 mm diam. Capitula 8-9 mm, phyllaries linear-lanceolate, 3-4 mm, ciliolate, ray florets 6-10(-20), narrow, white. Seed a linear finely grooved achene 2-3 mm, pappus-hairs fine, sordid-white, unequal, up to 5 mm long.

Similar taxa

Most likely to be confused with the allied O. arborescens from which it mainly differs by its narrower lanceolate leaves, usually smaller stature (in the wild at least), and habitat preferences.

Distribution

Endemic to the North and South Islands. In the North Island known from the Ohinemuri River south to the Tararua Ranges. In the South Island confined to North West Nelson and the vicinity of Westport near Ngakawau.

Habitat

Rocky river gorges in or near the flood zone.

Current conservation status

The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2022-2023 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website. This report includes replaces all previous NZTCS lists for vascular plants. Previous assessments can be found here.

  • Conservation status of vascular plants in Aotearoa New Zealand, 2023. 2024. Peter J. de Lange, Jane Gosden, Shannel P. Courtney, Alexander J. Fergus, John W. Barkla, Sarah M. Beadel, Paul D. Champion, Rowan Hindmarsh-Walls, Troy Makan and Pascale Michel Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.

2023 | At Risk – Declining | Qualifiers: Sp, DPS, DPT, PF, RR

Jump to previous conservation statuses

Threats

Threatened by weeds such as mistflower and buddleia that invade and smother the gorge side habitat of O. cheesemanii. Surveys of northern sites indicated a population structure skewed toward senescent adults, with few juveniles and seedlings persisting due to competition from these and other smaller weed species. River conversion for hydroelectric schemes may also be a threat. Dams disrupt natural flood cycles that help create new habitat and dislodge weeds. Accurate figures on decline are not available, and the exact species distribution is unknown. It would seem this species has its strong holds in northern South Island. Further survey is likely to reveal new populations, especially in the Kaimai Ranges, Mamaku Plateau, Raukumara, Te Urewera, Ruahine and Tararua Ranges.

Detailed taxonomy

Family

Asteraceae

Authority

Olearia cheesemanii Cockayne et Allan

Synonyms

Olearia nitida var. angustifolia Cheeseman, O. arborescens var. angustifolia Cheesema

Endemic taxon

Yes

Endemic genus

No

Endemic family

No

Ecology

Flowering

August - January

Fruiting

November - June

Propagation technique

Easy from semi-hardwood cuttings and fresh seed. A very fast growing and attractive floriferous shrub. Tends to be short-lived. Does best in moist soils in sun or semi-shade.

Other information

Where To Buy

Commonly sold by most commercial nurseries.

Etymology

olearia: Named after Johann Gottfried Olearius, a 17th-century German scholar, writer of hymns and author of Specimen Florae Hallensis

cheesemanii: Named after Thomas Frederick Cheeseman (1846 - 15 October 1923) who was a New Zealand botanist and naturalist who, in 1906, produced The Manual of the New Zealand Flora.

NVS code

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.

OLECHE

Chromosome number

2n = 108

Previous conservation statuses

The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2022-2023 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website. This report includes replaces all previous NZTCS lists for vascular plants. Previous assessments can be found here.

  • Conservation status of vascular plants in Aotearoa New Zealand, 2023. 2024. Peter J. de Lange, Jane Gosden, Shannel P. Courtney, Alexander J. Fergus, John W. Barkla, Sarah M. Beadel, Paul D. Champion, Rowan Hindmarsh-Walls, Troy Makan and Pascale Michel Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.

2017 | At Risk – Naturally Uncommon | Qualifiers: DP, Sp

2012 | At Risk – Naturally Uncommon | Qualifiers: Sp

2009 | At Risk – Naturally Uncommon | Qualifiers: DP

2004 | Gradual Decline

Jump to current conservation status

Referencing and citations

References and further reading

Allan HH. 1961. Flora of New Zealand, Volume I. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. Government Printer, Wellington, NZ. 1085 p.

Attribution

Fact Sheet prepared for the NZPCN by P.J. de Lange 14 April 2006. Description adapted from Allan (1961) - supplemented with observations made from fresh specimens.

Some of this factsheet information is derived from Flora of New Zealand Online and is used under a Creative Commons Attribution 3.0 New Zealand licence.

NZPCN Fact Sheet citation

Please cite as: de Lange, P.J. (Year at time of access): Olearia cheesemanii Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/olearia-cheesemanii/ (Date website was queried)

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