The New Zealand Plant Conservation Network

Species

Notogrammitis angustifolia subsp. angustifolia

Etymology

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

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 angustifolia (Jacq.) Parris subsp. angustifolia

Family

Polypodiaceae

Flora Category

Vascular - Native

NVS Species Code

NOTASA

Structural Class

Ferns

Synonyms

Grammitis magellanica Desv. subsp. magellanica; Grammitis billardieri var. magellanica (Desv.) de la Sota; Grammitis poeppigiana (Mett.) Pic.Serm.; Polypodium billardierei var. magellanicum (Desv.) C.Chr.; Grammitis araucana Phil.; Polypodium gramineum Poir.; Polypodium magellanicum (Desv.) J.W.Sturm; Polypodium poeppigianum Mett.; Asplenium angustifolium Jacq.

Distribution

Indigenous. New Zealand: Chatham, Antipodes, Auckland and Campbell Islands. Also South America (Chile, Argentina), Tristan da Cuntha, and Gough Islands.

Habitat

Coastal to subalpine (in coastal forest on the Chatham and Auckland Islands), extending from the coast to the subalpine areas on Antipodes, Auckland and Campbell Islands. A common epiphyte on Dracophyllum scoparium and D. cockayneanum on Campbell Island. Recorded from Dracrophyllum arboreum on the Chatham Islands.

Features

Tufted epiphytic (rarely rupestral or terrestrial) fern usually forming colonies. Rhizome erect to short-creeping; plants often colonial, fronds rather lax; paleae light brown, lanceolate, acute or rarely obtuse, 1.9-4.0 × 0.3-0.7 mm. Stipes indistinct, winged to base; stipe hairs absent or very rare, whitish, to 1.0 mm. Lamina (22-)40-96(-120) × (2-)2.8-5.0(-6.5) mm, linear-oblanceolate,acute ; lamina hairs absent or very rare, as those of stipe; texture coriaceous; veins invisible, vein endings sometimes marked by a black marking, perhaps a hydathode, on the upper surface; midrib raised on lower surface, concolorous with or slightly darker than lamina. Sori oblong, oblique, in upper one-third to two-thirds of frond, 4-21 pairs, 1.5-5.0 × 1.0-1.5 mm; soral vein ending within the sorus or extending a little beyond it, shorter than basiscopic vein, neither approaching margin very closely. Sporangia (180-)212.6-269.0(-300) microns long; indurated cells of annulus (8.0-)10.4-13.0(-15.0). Spores (25.0-)29.8-38.0(-50) microns diameter.

Similar Taxa

Distinguished by the combination of having a tufted, shortly creeping growth habit, fronds that < 100 mm long, are glabrous (or nearly so), and a paleae that is < 6 mm long. In G. magellanica subsp. magellanica the plants are often colonial, the fronds tend to be laxly arranged and the vein ends conspicuously darkened. On the Chatham islands both subspecies occur.

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

No

Endemic Genus

No

Endemic Family

No

Life Cycle and Dispersal

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

This page last updated on 28 Sep 2014