Species

Notogrammitis crassior

Etymology

Notogrammitis: From the Greek noto- ‘southern’ and gramma ‘line', referring to this new genus of southern strap ferns which were previously in Grammitis.

Common Name(s)

dwarf strap fern

Current Conservation Status

2012 - Not Threatened

Conservation status of New Zealand indigenous vascular plants, 2012
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2012 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2009 and replaces all previous NZTCS lists for vascular plants. Authors: Peter J. de Lange, Jeremy R. Rolfe, Paul D. Champion, Shannel P. Courtney, Peter B. Heenan, John W. Barkla, Ewen K. Cameron, David A. Norton and Rodney A. Hitchmough. File size: 792KB

Previous Conservation Status

2009 - Not Threatened
2004 - Not Threatened

Authority

Notogrammitis crassior (Kirk) Parris

Family

Polypodiaceae

Flora Category

Vascular - Native

NVS Species Code

NOTCRA

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.

Structural Class

Ferns

Synonyms

Polypodium billardieri var. pumilum (J.B.Armstr.) Cheeseman; Polypodium billardierei f. nana (Franchet) Skottsb.; Grammitis australis var. alpina S.Jones; Grammitis australis var. nana Franchet; Polypodium australe var. pumilum (J.B.Armstr.) Cockayne; Polypodium crassium Kirk; Polypodium pumilum (J.B.Armstr.) Cockayne; Grammitis kerguelenensis Tardieu; Grammitis nana Brack.; Grammitis pumila J.B.Armstr.; Grammitis armstrongii Tindale; Polypodium australe var. minutum F.Muell.

Distribution

Indigenous. New Zealand: North, South, Stewart, Campbell and Macquarie Islands from Mt Hikurangi south (but generally scarce in the North Island). Also known from Australia (New South Wales, Victoria, Tasmania,), South America (Chile, Argentina), Falkland Islands, South Georgia, Tristan da Cuntha, Gough Island, South Africa, and from Kerguelen, Marion, and Crozet Islands.

Habitat

Coastal to alpine (strictly subalpine to alpine in the North Island) mostly in the wetter parts of the main islands of New Zealand. A common fern on boulders and cliff faces, earth banks and stony soils and stream banks. Rarely extends into forest and then only in the southern part of its range

Features

Terrestrial or rupestral fern. Rhizome long-creeping (rarely short-creeping), often mat-forming; paleae light brown, ovate to ovate-lanceolate, rarely lanceolate, obtuse to acute, 1.0-3.5 × 0.4-1.2 mm. Stipes indistinct, winged almost to base; stipe hairs absent. Lamina (4-)5-19(-30) × (2-)2.5-3.4(-5) mm; spathulate to linear-spathulate, rarely broadly oblanceolate, obtuse to broadly acute; lamina hairs occasionally present, sparse, brown, multicellular, to 0.7 mm; texture thickly coriaceous; veins invisible, endings not darkened; midrib slightly raised or completely invisible on underside of lamina, concolorous. Sori subglobose to globose, sometimes ± coenosoroid, usually confluent when mature, usually terminal on frond, l-4(—5) pairs, 1-3 × 1-2 mm, to 8 mm long when coenosoroid; soral vein ± equal in length to basiscopic vein, neither reaching the margin. Sporangia (240-)252.5-319.1(-400) microns long; indurated cells of annulus (10-)11-14(-20). Spores (31-)39.2-53.6(-65) microns diameter.

Similar Taxa

Distinguished from the other New Zealand species of Notogrammitis by the combination of having a creeping rhizome, fronds 5-19 × 2-3.4 mm, these usually bearing < 3 pairs of sori; with the sori 1-3 mm long and subglobose to globose.

Flowering

Not applicable - spore producing

Flower Colours

No Flowers

Fruiting

Not applicable - spore producing

Propagation Technique

Difficult - should not be removed from the wild

Threats

Not Threatened

Chromosome No.

2n = 74

Endemic Taxon

No

Endemic Genus

No

Endemic Family

No

Where To Buy

Not commercially available

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). Notogrammitis crassior is the fern that has been known in New Zealand for some time, incorrectly (see Perrie & Parris 2012) as Grammitis poepiggiana.


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.

 

This page last updated on 11 Aug 2014