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  4. Fimbristylis velata

Fimbristylis velata

Lake Whangape. Mar.<br>Photographer: John Smith-Dodsworth, 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>
Lake Whangape. Mar.<br>Photographer: John Smith-Dodsworth, 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>
Lake Whangape. Mar.<br>Photographer: John Smith-Dodsworth, 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>
Lake Whangape. Mar.<br>Photographer: John Smith-Dodsworth, 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>
Lake Whangape.<br>Photographer: Peter J. de Lange, Date taken: 01/01/1999, 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>
Lake Whangape.<br>Photographer: Peter J. de Lange, Date taken: 01/01/1999, 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>
Lake Whangape.<br>Photographer: Peter J. de Lange, Date taken: 01/01/1999, 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>
Fimbristylis velata specimen.<br>Photographer: Bec Stanley, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-sa/4.0'>CC BY-SA</a>.
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Common names

fimbristylis

Biostatus

Native

Category

Vascular

Structural class

Sedges

Detailed description

Annual sedge forming small pubescent, spreading tufts on freshly exposed sunny, usually damp and/or muddy ground. Culms 30–280 × 0.5–0.8 mm, rather flaccid and spreading, finely pubescent. Leaves usually < culms, brown-green to glaucous green, filiform to linear-lanceolate, channelled near base; sheaths broader, light brown to pale grey. Inflorescence a compound spreading umbel 10–40–80 mm long, sometimes reduced to a few near sessile spikelets; subtending bracts 3–4–(6) leaf-like,1–3 of these > umbel width. Spikelets 3.5–8 mm long, stalked, pale brown to glaucous brown. Glumes numerous, elliptic, with a prominent, rigid, dark green scabrid keel, often extending to a mucro, and usually recurved in the lowermost glume of each spikelet. Stamens 1–(2). Style bifid, the bulbous base ringed by fine retrorse cilia, sufficiently copious to cover the ovary, but not (or rarely) extending beyond the mid-point. Nut 0.8–1 × 0.5–0.6 mm diameter, cream-coloured, biconvex, orbicular, smooth.

Similar taxa

None though it could be confused with some annual species of Juncus, for example J. bufonius L. with which it often grows. From that species it is readily distinguished by its wide spreading, pubescent culms, umbellate inflorescences, and obvious spikelets.

Distribution

Indigenous. North Island from Ngawha Springs, the Bay of Islands, Pouto Peninsula and Great Barrier Island south to Lake Taupo. Most common in the Huntly Basin, particularly around Lakes Whangape, Rotongaro and Rotongaroiti. It is present near Ohinemutu and Whakarewarewa Geothermal Fields, near Rotorua and at Karapiti near Wairakei. Present in Australia and probably elsewhere.

Habitat

A strict annual which is most often found along the shoreline or receeding shallow lakes and river margins where it grows in damp mud and organic sediments. It has also been found growing on permanently damp ground around active fumaroles within geothermal areas, and as a sporadic weed in ephemeral wetlands created by urban redevelopment within Hamilton City.

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 – Naturally Uncommon | Qualifiers: Sp, DPR, DPS, DPT, EF, SO

Jump to previous conservation statuses

Threats

Long regarded as seriously at risk of extinction because the few known occurrences were on the brink of extinction this situation changed in the late 1980s following its surprise rediscovery in the Waikato lowlands, where, particularly around Lakes Whangape, Rotongaro and Rotongaroiti it can be one of the dominant species growing on the receding lake shores during summer. Ecologically this is a biologically sparse species which appears to be an opportunistic of freshly disturbed wetland habitats. For example it has even been collected as a wetland weed in parts of Hamilton City.

Detailed taxonomy

Family

Cyperaceae

Authority

Fimbristylis velata R.Br.

Synonyms

Fimbristylis squarrosa Vahl

Taxonomic notes

The New Zealand plant was last treated here by the New Zealand Flora series as F. squarrosa (Moore & Edgar 1970). However, the New Zealand plant has since been shown by Wilson (1993) to be referrable to F. velata.

It has been suggested that this species is naturalised in New Zealand. That suggestion partly stemmed from an imperfect understanding of this species’ ecology, distribution, and its confusion with F. squarrosa. It is now recognised as quite widespread and its occurrences appear to be quite natural. The species was probably introduced to New Zealand by dabbling waterfowl such as grey teal and other ducks, which frequent its preferred habitats in Australia.

Endemic taxon

No

Endemic genus

No

Endemic family

No

Ecology

Flowering

October–March

Fruiting

October–June

Life cycle and dispersal

Nuts are possibly wind dispersed (Thorsen et al., 2009).

Propagation technique

Easy from fresh seed. Can become quite invasive but it is cold sensitive and cannot tolerate much competition from taller plants. Does best in pots or in permanently damp ground in a warm, sheltered, sunny place.

Other information

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: EF, SO, Sp

2012 | At Risk – Naturally Uncommon | Qualifiers: EF, SO, Sp

2009 | At Risk – Naturally Uncommon | Qualifiers: SO

2004 | Sparse

Jump to current conservation status

Referencing and citations

References and further reading

Moore LB, Edgar E. 1970. Flora of New Zealand, Volume II. Indigenous Tracheophyta: Monocotyledones except Gramineae. Government Printer, Wellington, NZ. 354 p.

Thorsen MJ, Dickinson KJM, Seddon PJ. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285–309.

Wilson KL. 1993. Cyperaceae. Flora of New South Wales 4: 378–379.

Attribution

Fact sheet prepared for NZPCN by P.J. de Lange (6 August 2006). Description adapted from Moore & Edgar (1970).

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): Fimbristylis velata Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/fimbristylis-velata/ (Date website was queried)

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