The New Zealand Plant Conservation Network

Species

Trichostomum imshaugii

Common Name(s)

moss

Current Conservation Status

2009 - Data Deficient

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

Authority

Trichostomum imshaugii (Vitt) R.H.Zander

Family

Pottiaceae

Flora Category

Non Vascular - Native

Structural Class

Moss

Synonyms

Barbula imshaugii Vitt

Distribution

?Endemic. South Island (Fiordland National Park), Campbell Island.

Features

Dark-green to olive-green moss forming tufts 2-3 mm tall. Stems erect, simple. Leaves erect-incurved, occasionally weakly twisted, apex cuspidate, recurved when dry, erect-spreading to recurved-spreading when moist, 1.5-2.0 mm long, ligulate-oblong, to oblong, rarely spathulate-oblong, sometimes slightly contracted near the middle of the leaf, strongly cuspidate, acute to obtuse, strongly carinate, canaliculate; margin entire, plane; nerve strong, papillose in the upper ½, excurrent as a strong red, cuspidate apex, c.45-70 µm wide at the leaf middle, in cross-section with two stereid bands; upper cells 7-12 µm wide, subquadrate to rounded-quadrate, pluripapillose, obscure; basal cells long-rectangular (c.3:1) hyaline, thin-walled, becoming quadrate to short-rectangular, slightly papillose and chlorophyllose at the upper basal margin, forming a border of 3-6 rows of cells in the upper basal portion of the leaf. Sporophytes not seen.

Fruiting

Fruits not known

Threats

Known from very few collections. Probably not threatened but as so little is known about it, it has been listed Data Deficient as a precautionary measure.

This page last updated on 25 Jul 2014