Species

Chionochloa rubra subsp. occulta

Etymology

Chionochloa: snow grass
rubra: red

Common Name(s)

red tussock

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

Chionochloa rubra subsp. occulata Connor

Family

Poaceae

Flora Category

Vascular - Native

NVS Species Code

CHIRSO

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.

Structural Class

Grasses

Synonyms

None (first described in 1991)

Distribution

Endemic. New Zealand: South Island (Nelson and West Coast to Cascade Plateau).

Habitat

Upper montane to alpine in scrubland, or as a local dominant in tussock grassland

Features

Tall, slender, red tussock with crowded, erect, stiff, rush-like leaves. Leaf-sheath to 300 mm, dark brown, keeled, incurving, fracturing into short segments, inter-ribs with minute and long hairs, margin separating and coiling, apical tuft of hairs to 3 mm. Ligule to 1 mm. Leaf-blade to 1 m long, 1.2 mm diameter, falling with part of sheath; acicular rush-like, splitting longitudinally, keel hollow, abaxially glabrous but infrequently with long hairs near base, prickle-teeth towards apex, adaxially dense wefts of long hairs extending up leaf-blade or short hairs in rows, papillate or prickle-toothed above. Culm to 1.5 m, internodes sometimes long hairy, sheath glabrous. Inflorescence to 45 cm, open on pulvinate branches, glabrous except for long hairs at branch axils and short stiff hairs below spikelets, rarely becoming scabrid above. Spikelets of up to 9 florets. Glumes glabrous, acute, infrequently awned, ¡Ü adjacent lemma lobes, lower to 12 mm, 1-3-5-nerved, upper to 14 mm, 3-5-7-nerved. Lemma to 6 mm; hairs dense on margin, < sinus; lateral lobes to 6 mm including awn to 2.5 mm; central awn to 13 mm from twisting column to 3 mm. Palea to 8 mm. Callus to 1.5 mm, hairs to 4 mm. Rachilla to 0.75 mm. Lodicules to 1 mm. Anthers to 5 mm. Ovary to 1 mm; stigma-styles to 4 mm. Caryopsis to 3.5 mm

Similar Taxa

Morphologically distinguished from the rest of the Chionochloa rubra Zotov complex by the long weft of hairs on the upper leaf-blade surface which extends well above the ligule

Flowering

October - December

Fruiting

November - April

Propagation Technique

Easy from fresh seed and the division of whole plants. However, can be slow growing and dislikes warm, humid climates and drought. Though once established it can take plenty of abuse. The reddish leaves are especially attractive.

Threats

Not Threatened

Chromosome No.

2n = 42

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

 




Attribution

Description modified from Edgar and Connor (2000).

References and further reading

Edgar, E.; Connor, H.E. 2000: Flora of New Zealand. Vol. V. Grasses. Christchurch, Manaaki Whenua Press. 650 pp.

This page last updated on 15 Aug 2014