Arachniodes aristata
Synonyms
Polystichopsis aristata (G.Forst.) Holttum; Polystichum aristatum (G.Forst.) C.Presl; Rumohra aristata (G.Forst.) Ching; Lastrea aristata (G.Forst.) T.Moore; Nephrodium aristatum (G.Forst.) C.Presl; Polypodium aristatum G.Forst.; Aspidium aristatum (G.Forst.) Sw.; Byrsopteris aristata (G.Forst.) C.V.Morton; Dryopteris aristata (G.Forst.) Kuntze
Family
Dryopteridaceae
Flora category
Vascular – Native
Endemic taxon
No
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.
ARAARI
Chromosome number
2n = 164
Current conservation status
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) – 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.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – an interim threat classification status has not been assessed by the NZTCS panel.
- Conservation status of New Zealand indigenous vascular plants, 2017 . 2018. 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. 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: OL, SO
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: OL, SO
2009 | At Risk – Naturally Uncommon | Qualifiers: SO, OL
2004 | Range Restricted
Distribution
Indigenous. In New Zealand known only from Raoul Island. Also recorded from Asia, Australia and the Pacific Islands
Habitat
Common on Raoul Island within dry, usually shaded lowland forest, where it grows amongst sparsely vegetated leaf litter.
Detailed description
Stout terrestrial fern of the forest floor. Rhizomes long-creeping, scaly. Stipes 0.2–0.86 m long, stiff and wiry, scaly, particularly near the base. Frond lamina broadly ovate, deltoid to 5-angled, 3-pinnate, 0.3–0.8 × 0.2–0.5 m, dark glossy green above, paler beneath, harshly textured, midribs scaly. Primary pinnae long-stalked, narrowly ovate above, ovate below, the longest at base. Basal basiscopic secondary pinna on each basal primary pinna greatly enlarged. Ultimate segments acutely toothed.
Life cycle
Minute spores are wind dispersed (Thorsen et al., 2009).
Propagation technique
Easily grown from fresh spores and rooted pieces. Cold sensitive but does well in a free draining soil in a shaded warm site or in a pot. Once established very drought tolerant. Not commonly cultivated in New Zealand but it has proved hardy in Aucklands climate.
Threats
Not threatened. Listed only because it is known in the New Zealand Botanical Region from the one location, Raoul Island.
Where To Buy
Not commercially available
Attribution
Fact sheet prepared by P.J. de Lange for NZPCN (1 June 2013)
References and further reading
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. https://doi.org/10.1016/j.ppees.2009.06.001.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Arachniodes aristata Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/arachniodes-aristata/ (Date website was queried)