The New Zealand Plant Conservation Network

Species

Pyrrhobryum paramattense

Common Name(s)

moss

Current Conservation Status

2009 - Range Restricted

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

Qualifiers

2009 - SO

Authority

Pyrrhobryum paramattense (C. Müll.) Manuel

Family

Rhizogoniaceae

Flora Category

Non Vascular - Native

Structural Class

Moss

Synonyms

Mnium paramattense Müll.Hal.

Distribution

Indigenous. Australia (Queensland, New South Wales, Victoria and Tasmania), Lord Howe and Norfolk Islands. In New Zealand recorded from Raoul Island (Kermadec Islands), the North Island (Northland, Waipoua) and from Chatham Island.

Features

Acrocarpous, dioicous, yellow-green to dark green, moss 50-100 mm tall. Stems dark reddish brown, simple, sparingly branched; lower stems bare, immature stems with distant scale leaves. Leaves sparse, crisped when dry, spreading when moist, lanceolate to linear-lanceolate, up to 7.0 x 0.4 mm, acuminate; margin plane, denticulate in upper-half with clear sharp twinned teeth, bordered by 2-3 rows of cells, bistratose below, multistratose above; costa broad, prominent, brownish, percurrent with sharp twinned teeth above, 150 µm wide at base; costal cells quadrate, rounded or slightly rectangular (14 x 8 µm); marginal cells ± quadrate, 8 µm. Rhizoides near bases, red to brownish, weakly papillose to 0.8 mm long, to 25 µm wide; cells to 100 µm long, indistinct. Perigonia c.6, bud-like, clustered at base of stems. Perigonial leaves lanceolate to oblong-lanceolate, up to 1.4 x 0.6 mm, shouldered; base straight, entire; apex sharply acuminate, serrate: nerve reddish-brown, prominent, to 60 µm wide at base; costal cells narrowly rectangular, 30-80 x 4-9 µm. Laminal apical cells ± thick-walled, very variable in shape and size, linear to irregularly rectangular to 30 x 5 µm; medial cells thin-walled, rectangular to hexagonal, to 40 x 10 µm; marginal; cells longer, rectangular to 70 x 12 µm, basal cells irregularly rectangular to 80 x 12 µm. Antheridia up to 12 per perigonium, to 480 x 120 µm; stalk to 40 µm long; paraphyses clear, ± same length as antheridia, to 20 µm wide; cells rectangular, to 120 µm long. Perichaetia numerous, basal or on short lateral basal branches. Perichaetial leaves broadly lanceolate to 4.7 x 0.5 mm, gradually tapering to long, serrate subulae; upper cells thick-walled, quadrate, to 10 µm; medial cells thick-walled, rectangular, to 18-20 x 5 µm; basal cells thin-walled, rectangular, to 30 x 4 µm, broader absent. Archegonia c.30 per Perichaetium, 560 x 40 µm; paraphyses clear, to 600 x 20 µm; cells to 60 µm long. Calyptra c.3 mm long, smooth, brown. Seta reddish yellow, 10-50 mm long, erect to curved. Capsule dark red, to 3 mm long, inclined, asymmetrical, clavate-curved, smooth; annulus present. Operculum short, obliquely-rostrate; 600-700 µm long, striate below, finely papillose above; endostome segments fragile, as long as teeth, weakly papillose; basal membranes high; cilia shorter, 1-2. Spores 12-18 µm, finely papillose to smooth.

Fruiting

Fruits have been found but there is insufficient information to provide an exact fruiting time.

Threats

Not Threatened. Listed only because it is known from very few sites within a narrow geographic range. All known sites are on protected land.

This page last updated on 20 Oct 2014