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  4. Centrolepis strigosa

Centrolepis strigosa

Lake Waikare, Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 9 January 2011, 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>
Kai Iwi Lakes.<br>Photographer: John E. Braggins, Licence: All rights reserved.
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 9 January 2011, 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>
Lake Waikare, Kaiwi Lakes. Jan 2011.<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>
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 10 January 2011, 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>
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 9 January 2011, 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>
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 9 January 2011, 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>
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 9 January 2011, 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>
Kaiwi Lakes.<br>Photographer: Jeremy R. Rolfe, Date taken: 10 January 2011, 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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Common name

centrolepis

Synonyms

Desvauxia strigosa R.Br.

Family

Restionaceae

Authority

Centrolepis strigosa (R.Br.) Roem. et Schult.

Flora category

Vascular – Native

Endemic taxon

No

Endemic genus

No

Endemic family

No

Structural class

Herbs - Monocots

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.

CENSTR

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 Endangered

Previous conservation statuses

2012 | Threatened – Nationally Critical | Qualifiers: EF, RR, SO, Sp

2009 | At Risk – Naturally Uncommon | Qualifiers: SO, EF

2004 | Sparse

Distribution

Indigenous. New Zealand: North and South Islands. In the North Island known locally from the Kai Iwi Lakes, Glinks Gully and Bayly’s Beach (west of Dargaville) to Lake Ototoa (see de Lange 2011). In the South Island known only from near Bluff Hill and Invercargill. Also in Australia

Habitat

Coastal to lowland. Growing in open clay, sand or silty places in damp places near lake or pond margins, or on open sand pans within gumland scrub (see de Lange 2011).

Features

Delicate tufted annual 15-70 mm tall. Roots fine, fibrous (whole plant easily detached from soil). Leaves 10-30 x 0.2 mm, filiform, grey-green to green, hispid the surfaces being covered in long white, rigid, multicellular hairs; apices acicular, otherwise leaves broadening toward a membranous sheath. Flowering stems 20-65 x 0.4 mm, much longer than leaves, hispid with very fine somewhat tangled, white hairs. Glume-like bracts 2-3, these 3 mm long, green or pinkish-green with a narrow membranous margin, ovate and spreading, covered with long, rigid, multicellular hairs; awns glabrous 1 mm long with an acicular apex. Pseudanthia 4-8 in each bract, these almost equal to bracts in length, each with 3 hyaline, unequal, fringed scales, one very much shorter the other two of similar length, sheathing the male and female flowers, Male flowers set with 1 per partial inflorescence, females 4-8 per partial inflorescence, connate and superposed in 2 rows, or occasionally appearing spirally arranged. Styles not connate. Seed 0.5 mm long, brown with a dark tip at each end, obovate-oblong, blunt at the apex, surface finely reticulated.

Similar taxa

None. A very distinctive and singular species which has little resemblance to the other endemic New Zealand species (see Fact Sheets).

Flowering

December - February

Fruiting

December - March (- April)

Life cycle

Seeds are wind dispersed (Thorsen et al., 2009).

Propagation technique

Difficult. Should not be removed from the wild.

Threats

A naturally uncommon, biologically sparse, seasonal annual. Although it has not been reliably reported from Bluff and Invercargill for many years it is probably still present there. It is seasonally abundant at the Kai Iwi Lakes (de Lange 2011).

Etymology

centrolepis: Pointed scale

Attribution

Fact Sheet Prepared for NZPCN by: P.J. de Lange 14 August 2006. Description based on Moore & Edgar (1970).

References and further reading

de Lange, P.J. 2011: Centrolepis strigosa - a rarely seen annual. Trilepidea 87: 7-9.

Moore, L.B.; Edgar, E. 1970: Flora of New Zealand. Vol. II, Wellington, Government Printer.

Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285-309

Citation

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

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