The New Zealand Plant Conservation Network

Species

Notogrammitis givenii

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)

strapfern

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

Grammitis givenii Parris

Family

Polypodiaceae

Flora Category

Vascular - Native

NVS Species Code

NOTGIV

Structural Class

Ferns

Synonyms

Grammitis givenii (Parris) Parris

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

Propagation Technique

Difficult. Should not be removed from the wild.

Threats

Not Threatened

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

Life Cycle and Dispersal

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

This page last updated on 22 Jan 2017