Hymenophyllum falklandicum
Biostatus
Native
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 | Not Evaluated
Category
Vascular
Structural class
Ferns
Detailed description
Terrestrial fern form ing small patches on banks and rocks. Rhizome dark brown, slender, creeping, finely and extensively branching, glabrous, bearing numerous widely spaced (20–40 mm apart) fronds. Stipe near half of frond length, slender, without wing, dark brown, wiry; rachis similar, upper portion very narrowly winged. Fronds bipinnate, 10–20 × 5–7 mm, broadly oblong, membranous; pinnae 10–15, asymetrically divided with secondary pinnae confiend to apical side; secondary pinnae oblong, truncate, sharply serrated. Sori confined to frond apices, 0.65–0.7 mm wide; solitary, inserted on a short segment near base of pinna, brown when mature, indusium elliptic to ovate, deeply bifid, slightly wider that subtending pinnule segment.
Similar taxa
Has been confused with Hymenophyllum peltatum (Poir.) Desv., from which it differs by its over all smaller size, solitary sori, 1–2 rather than 3–5, secondary pinnae, and by the rachis wings restricted to the frond section between the ultimate 2 or 3 pinnae, rather than, as is seen in H. peltatum the wing extending for the full length of the rachis.
Distribution
In New Zealand confined to Macquarie Island, present also in southern South America (Chile and western Argentina), the Falkland Islands, South Georgia and Juan Fernandez islands.
Habitat
On Macquarie Island known only from feldmark communities
Threats
None known. Confined in the New Zealand Botanical Region to Macquarie Island, where it is locally common.
Detailed taxonomy
Genus
Family
Synonyms
None
Endemic taxon
No
Endemic genus
No
Endemic family
No
Ecology
Propagation technique
Unknown.
Other information
Status note
This species is included in the NZPCN Fact Sheets because Macquarie Island is part of the New Zealand Botanical Region. However, Macquarie Island is part of the Australian Territory, and so its administration lies with that nation.
Etymology
hymenophyllum: Membranous leaf, from the Greek humen and phullon
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.
2009 | At Risk – Naturally Uncommon | Qualifiers: RR
2004 | Range Restricted
Referencing and citations
Attribution
Fact Sheet prepared for NZPCN by P.J. de Lange 1 November 2008. Description based on herbarium specimens.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Hymenophyllum falklandicum Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/hymenophyllum-falklandicum/ (Date website was queried)