Fissidens oblongifolius Hook.f. et Wilson var. oblongifolius
Non-vascular – Native
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.
Current conservation status
- Conservation status of New Zealand mosses, 2014 (PDF, 583.87 kB)
The conservation status of 109 New Zealand moss taxa was assessed using the New Zealand Threat Classification System (NZTCS). Four taxa and one undescribed entity that were not included in previous assessments have been added to the list. The conservation status of only two taxa has changed in this assessment. A full list is presented, along with a statistical summary and brief notes on the changes. This list replaces all previous NZTCS lists for mosses. Authors: Jeremy R. Rolfe, Allan J. Fife, Jessica E. Beever, Patrick J. Brownsey and Rodney A. Hitchmough
- Conservation status of New Zealand hornworts and liverworts, 2014 (PDF, 695.44 kB)
The conservation status of the New Zealand hornwort and liverwort flora is reassessed using the New Zealand Threat Classification System (NZTCS). A full list is presented, along with a statistical summary and brief notes on the most important changes. This list replaces all previous NZTCS lists for New Zealand hornworts and liverworts which previously had been part of a generic bryophyte conservation status assessment that included mosses. Authors: Peter J. de Lange, David Glenny, John Braggins, Matt Renner, Matt von Konrat, John Engel, Catherine Reeb and Jeremy Rolfe
2009 | At Risk – Naturally Uncommon | Qualifiers: DP, RR, SO, Sp
Previous conservation status
2004 | Data Deficient
Indigenous. New Zealand: Kermadec Islands (Raoul Island), North Island (Te Paki, Ahipara, Bay of Islands and Rangitoto Island), Chatham Islands (Rekohu). Also Australia.
Terricolous and saxicolous. Coastal to lowland in open scrubland (especially on exposed clay pans or under a light shrub canopy) but also in stream beds, on water saturated banks, in seepages, around cave entrances, amongst rocks, in crevices and in dense forest.
Plants 5-25 mm long, sometimes black below, loosely gregarious. Stems frequently branched by means of innovations below the terminal gametoecia, with rhizoids at the base only. Leaves in 15-30(-40) pairs, overlapping in mid-stem, patent, plane when moist, tips loosely and irregularly rolled up when dry, tending toward the substratum, lingulate, 1.7-3.0 x 0.2-0.35 mm; the apex acute to obtuse; laminae unistratose; the vaginant lamina up to 2/3 the leaf length, half-open to closed; margins serrulate-crenate on the apical, dorsal, and the vaginant laminae, with cells of the suprabasal vaginant lamina margins isodiametric to oblate; cells of the apical and dorsal laminae irregularly hexagonal, smooth, strongly bulging. Dorsal lamina tapered to base, often failing above the insertion; cells of the apical and dorsal laminae (6-)8-11(-15) x (6-)8-11(-15) µm. Costa failing below the leaf apex. Gonioautoicous. Perigonia axillary on the fruiting stems, bulbiform, conspicuous. Perichaetia terminal on main shoots and innovations, perichaetial leaves longer than the vegetative leaves. Setae 5-10 mm; capsules horizontal to inclined, moderately to strongly asymmetric, 5.0-1.0 mm. Calyptra and mature spores not seen in New Zealand material.
Most often confused with Fissidens asplenioides from which it differs by its dark green rather than yellow-green colour and by the suprabasal region of the vaginant lamina which in F. asplenioides has marginal cells taller than wide, and the margin itself is entire (or nearly so), whereas in F. oblongifolius the marginal cells are wider than tall and the margin is distinctly serrulate (see Beever et al. 2002). From the two other allied members of the F. oblongifolius complex, F. oblongifolius is distinguished by a suite of characters than include the presence of bulbiform axillary perigonia; perichaetial leaves longer than the vegetative leaves; by the longer setae and absence of calyptra and mature spores (Beever et al. 2002). Fissidens oblongifolius is usually terricolous and seems more tolerant than F. capitatus and F. hyophilus of drought and exposed conditions.
Sporophytes although not common may be seen throughout the year
Fissidens oblongifolius is now known to be a sparsely distributed, naturally uncommon species of mostly northern New Zealand. It is most common in Te Paki where it is the dominant Fissidens species of the exposed ferricrete clay pans and erosion gullies of North Cape (which is a fully protected area). Elsewhere in New Zealand it seems to be genuinely scarce and in some areas is only known from a handful of plants. Beyond habitat loss in some coastal areas through residential development there seem to be no major threats affecting this species.
Rock, saprolite, and clay.
fissidens: From the Latin fissio ‘fission’ and dens ‘tooth, prong’ meaning split tooth and referring to shape of the lamina.
Fact sheet prepared for NZPCN by P.J. de Lange August 2007. Description adapted from Beever et al. (2002).
References and further reading
Beever, J. Malcolm, B.; Malcolm, N. 2002: The moss genus Fissidens in New Zealand – an illustrated key. Nelson, Micro-Optics Press.
Please cite as: de Lange, P.J. (Year at time of access): Fissidens oblongifolius Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/fissidens-oblongifolius/ (Date website was queried)