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  4. Adiantum fulvum

Adiantum fulvum

Kennedy Bay.<br>Photographer: John Smith-Dodsworth, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Kennedy Bay.<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 name

maidenhair

Family

Pteridaceae

Authority

Adiantum fulvum Raoul

Flora category

Vascular – Native

Endemic taxon

Yes

Endemic genus

No

Endemic family

No

Structural class

Ferns

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.

ADIFUL

Chromosome number

2n = 116

Current conservation status

  • Conservation status of New Zealand indigenous vascular plants, 2017

The threat classification 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) – more information about this can be found on the NZTCS website 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. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.

Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.

2017 | Not Threatened

Previous conservation statuses

2012 | Not Threatened

2009 | Not Threatened

2004 | Not Threatened

Distribution

Endemic. New Zealand: North, South, and Chatham Islands. From Te Paki south to the Taranaki and Hawkes Bay thence rather local reaching a southern limit on Banks Peninsula.

Habitat

Coastal to lower montane in closed forest on clay banks, amongst boulders, along stream sides and in moderately open sites on the forest floor

Features

Tufted, terrestrial fern. Rhizomes short-creeping, c.1.5-2.0 mm diameter. Fronds spreading, dark green, concolorous, to 500 mm long. Stipe to 150 mm long, clad in short setose hairs. Lamina 150-350 × 100-250 mm, ovate to broadly ovate, 2-3-pinnate at base and 1-pinnate above; rachises flexuous, glossy, covered in short setose hairs. Pinnules attached by a short stalk on one corner, oblong to oblong falcate, curved acroscopically at apices, distal margins irregularly lobed, proximal margins smooth, adaxially glabrous, abaxially covered in sparse to dense short, setose hairs. Sori 1-7(-10) along distal margins, one per lobe; soral flaps subreniform to reniform, glabrous, ± immersed in the lobe.

Similar taxa

Easily confused with Adiantum cunninghamii with which it sometimes grows and from which it differs by its dark green rather than glaucescent fronds, and by the hairy stipes, rachises and undersides of the pinnules. Adiantum viridescens is also superficially similar it can be distinguished from A. fulvum by the narrower often sickle-shaped, shiny, dark green, glabrous pinnules.

Flowering

Not applicable - spore producing

Flower colours

No flowers

Fruiting

Not applicable - spore producing

Life cycle

Minute spores are wind dispersed (Thorsen et al., 2009).

Propagation technique

Slow but once established easy. Flourishes in deep shade, planted in a moist, well drained, fertile soil. Best grown from spores which must be sown fresh. Spores may take several years to produce plants.

Threats

Not Threatened but often rather uncommon over large parts of its range

Etymology

adiantum: From the Greek a- ‘without, lacking’ and diantos ‘moistened’, the fronds of this fern are supposed to remain dry after submersion in water

fulvum: Tawny yellow

Attribution

Fact Sheet including description prepared for NZPCN by P.J. de Lange (Updated 4 May 2011).

NZPCN Fact Sheet citation

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

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