Notogrammitis givenii
Common name
strapfern
Synonyms
Grammitis givenii (Parris) Parris
Family
Polypodiaceae
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.
NOTGIV
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). 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.
2012 | Not Threatened
Previous conservation statuses
2009 | Not Threatened
2004 | Not Threatened
Distribution
Endemic. New Zealand: North, South, Chatham, Campbell and Auckland Islands, from the Raukumara Range (Mt Honokawa) south (scarce in the North Island).
Habitat
Coastal to alpine (strictly montane in the North and South Islands) but extending to the coast on the Chathams and on the subantarctic coast. Commonly found on mostly south facing rocks and cliff faces, within crevices or joints or fringing cave entrances, within forest, scrub or alpine tussock grassland.
Features
Rupestral fern. Rhizome short-creeping to long-creeping; paleae pale brown, lanceolate, acute, 1.6-5.9 × 0.6-1.9 mm. Stipes pronounced, 1-18 mm long; stipe hairs whitish to pale red-brown, rare to common, 0.3-2.0 mm long. Lamina (11—)19—47(—99) × (3-)3.8-7.0(-10) mm; spathulate-oblanceolate to oblanceolate, obtuse to acute, lamina hairs whitish, sparse, on midribs only, more common in young fronds, to 1.2 mm long; texture coriaceous; veins invisible, endings not darkened; midrib somewhat raised below, ± concolorous with lamina. Sori subglobose to oblong, oblique, in upper half to third of frond, 1-10 pairs, 2.0-6.5 X 1,0-2.0 mm; soral vein ending within the sorus or extending a little beyond it, somewhat shorter than basiscopic vein, neither reaching the margin. Sporangia (190-)222.2-312.0(-390) microns long; indurated cells of annulus (10-)11.0-13.6(-17). Spores (25.0-)31.0-41.6(-50.0) microns diameter.
Similar taxa
Distinguished from the other New Zealand species of Notogrammitis by the combination of having a creeping rhizome, fronds distinctly stipitate, 19-57 × 3.8-7.0 mm, these usually bearing > 3 pairs of sori; with the sori 2.0-6.5 mm long and subglobose to oblong.
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
Difficult. Should not be removed from the wild.
Etymology
notogrammitis: From the Greek noto- ‘southern’ and gramma ‘line’, referring to this new genus of southern strap ferns which were previously in Grammitis.
Where To Buy
Not commercially available
Taxanomic notes
The New Zealand species of Grammitis along with Ctenopteris heterophylla and one Australian Grammitis (G. garrettii) one Lord Howe (G. diminuta) and one species endemic to the Moluccas and Indonesian (G. kairatuensis) have traditionally been placed in Grammitis (Parris & Given 1976; Parris 1998). However, these species (with the exception of G. diminuta, G. kairatuensis and G. stenophylla; B.S.Parris pers. comm. to P.J. de Lange January 2011) have now been transferred to a new genus, Notogrammitis Parris (Perrie & Parris 2012).
Attribution
Fact sheet prepared for NZPCN by P.J. de Lange (25 April 2011). Description from Parris & Given (1976)
References and further reading
Parris, B.S. 1998: Grammitidaceae. Flora of Australia 48: 450-468.
Parris, B.S.; Given, D.R. 1976: A taxonomic revision of Grammitis Sw. (Grammitidaceae: Filicales) in New Zealand. New Zealand Journal of Botany 14: 85-111.
Perrie, L.R.; Parris, B.S. 2012: Chloroplast DNA sequences indicate the grammitid ferns (Polypodiaceae) in New Zealand belong to a single clade, Notogrammitis gen. nov. New Zealand Journal of Botany 50: 457-472.
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
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Notogrammitis givenii Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/notogrammitis-givenii/ (Date website was queried)