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  4. Picris burbidgeae

Picris burbidgeae

In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 19/10/2007, 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>
Mature plant of Picris burbidgeae, Motukino (Fanal) Island, Mokohinau Islands group.<br>Photographer: Bec Stanley, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-sa/4.0'>CC BY-SA</a>.
Dec 2006.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Picris burbidgeae cypsela showing pappus and ribbed, slightly curved achene.<br>Photographer: Jeremy R. Rolfe, Date taken: 19/01/2007, 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>
Picris burbidgeae achenes.<br>Photographer: Jeremy R. Rolfe, Date taken: 19/01/2007, 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>
Picris burbidgeae.<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>
Picris burbidgeae.<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>
In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 19/10/2007, 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: 19/10/2007, 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: 19/10/2007, 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>
Picris burbidgeae inflorescence and capitula, Ex Cult. Aorangi Island, (Oratia Native Plant Nursery) December 2005.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Close up of Picris burbidgeae capitula, Ex Cult. Aorangi Island (Oratia Native Plant Nursery), December 2005.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Picris burbidgeae inflorescence and capitula, Ex Cult. Aorangi Island (Oratia Native Plant Nursery), December 2005.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Picris burbidgeae.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Picris burbidgeae seedlings, Ex Cult. Waikumete, New Lynn, Auckland.<br>Photographer: Peter J. de Lange, Date taken: 16/09/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Ex. Cult Aorangi Island.<br>Photographer: Gillian M. Crowcroft, 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>
In cultivation.<br>Photographer: Jeremy R. Rolfe, Date taken: 28/02/2009, 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: 28/02/2009, 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: 03/04/2009, 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: 03/04/2009, 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: 30/01/2010, 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: 30/01/2010, 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: 30/01/2010, 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>
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Synonyms

None. In the most recent New Zealand flora treatment all indigenous Picris have been referred to Picris hieracioides L. as species collected here once as a naturalised weed, and to which none of our indigenous species are closely related.

Family

Asteraceae

Authority

Picris burbidgeae S.Holzapfel

Flora category

Vascular – Native

Endemic taxon

No

Endemic genus

No

Endemic family

No

Structural class

Herbs - Dicotyledonous composites

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.

PICBUR

Chromosome number

2n = 10

Current conservation status

  • Conservation status of New Zealand indigenous vascular plants, 2017

The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley.

2018 | Threatened – Nationally Vulnerable

Previous conservation statuses

2012 | Threatened – Nationally Endangered | Qualifiers: EF, PD, SO, Sp

2009 | Threatened – Nationally Endangered | Qualifiers: EF, PD, SO, Sp

2004 | Threatened – Nationally Endangered

Distribution

Indigenous. In New Zealand known only from the northern North Island (from Te Paki to the Huntly Basin, near Waihi and Rotorua Lakes area), as well as most of the Hauraki Gulf islands. Also known from the Three Kings, and the main Chatham Island. Present in eastern Australia and on Norfolk Island, and the main island of Hawaii

Habitat

Primarily on offshore islands or in coastal or lowland situations. Often on talus slopes. This species requires open ground and will not tolerate heavy shade. It has been collected from gravelled margins of roadsides and in gravel pits.

Features

Annual to perennial herb 0.5-1.2(-2) m tall. Stem basally woody, dark green to purple-green, branched from upper 1/2 to 1/3. Indumentum of 2-hooked, bristly hairs, copious. Leaves yellow-green. Rosette leaves shortly petiolate, lamina 100-200 x 10-25 mm, narrowly lanceolate to ovate, entire or dentate; stem leaves lanceolate to narrowly lanceolate, entire or dentate, becoming smaller toward plant apex. Lower stem leaves 100-200 x 10-25 mm, upper 20-40 x 0.3-0.5 mm, terminal leaves bract or thread-like. Inflorescences in corymbose panicles. Capitula numerous, 9-12 mm long, 5-6 mm diam. Involucrum of 28-40 bracts in 3-4 irregular outer and 2 inner rows, length of bracts increasing from outer to inner rows. Bracts with a single line of 2-hooked anchor or bifid hairs along midrib on outer surface. Capitula with 30-45 sulphur yellow flowers. Achenes narrowly fusiform 4-5 mm long, 0.8-1.1 mm diam, tapering into short cuspis. Achene ribs 20-35. Pappus 5-8 mm long, pappus rays 50-80.

Similar taxa

The stem and leaf indumentum of oxtongue (Helminthotheca echioides (L.) Holub) has 2-, 3-, 4- or 5-hooked anchor hairs and the hairs of the leaves arise from a conspicuous swollen base. The involucral bracts of the flowers are in two rows, with the five outer involucral bracts ovate to cordate, and the apex of the inner bracts feather-like. Unlike our indigenous oxtongus (Picris spp. ) the achenes of the introduced oxtongue (H. echioides) are heteromorphic: the outer achenes, are larger, white, and pilose hairy; the inner shorter, dark-brown and glabrous. In our indigenous oxtongues (Picris spp.) the achenes are never heteromorphic.

Flowering

(July-) October - January (-May)

Flower colours

Yellow

Fruiting

(August-) October (- June)

Propagation technique

Easy from fresh seed which usually germinates within one to two months. A somewhat unusual plant that is unlikely to prove popular in cultivation, and it can become invasive in some situations.

Threats

Habitat loss through coastal development, succession, displacement by weed invasion, it is also prone top accidental eradication because of its weedy appearance.

Where To Buy

Plants can be seen at the Auckland Regional Council Botanic Gardens, at Manurewa, and at Auckland Zoo.

Cultural Use/Importance

Picris burbidgeae differs from P. angustifolia DC chiefly by details of its involucrum. In this species they are in 2-4 rows. The outer bracts are longer than 2/3 of the length of the innermost bracts, often almost as long as the inner bracts. The outer bracts are usually recurved and become distinctly squarrose and are either not as wide or wider than the inner bracts. The achenes are smaller (5-8 mm) and also the cuspis (0.3-0.9 mm). The cuspis is 1/6 – 1/14 the total achene length.

Attribution

Fact Sheet Prepared by P.J. de Lange (1 November 2009). Description based on Holzapfel & Lack (1993) and fresh specimens. Description subsequently published in de Lange et al (2010).

References and further reading

de Lange, P.J.; Heenan, P.B.; Norton, D.A.; Rolfe, J.R.; Sawyer, J.W.D. 2010: Threatened Plants of New Zealand. Canterbury University Press, Christchurch.

Holzapfel, S.; Lack, H. W. 1993: New species of Picris (Asteraceae, Lactuceae) from Australia. Willdenowia 23: 181-191.

NZPCN Fact Sheet citation

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

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