Avena quadriseta Labill., Agrostis quadriseta (Labill.) R.Br., Calamagrostis quadriseta (Labill.) Spreng., Deyeuxia quadriseta (Labill.) Benth.
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.
2n = 56
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley.
2018 | At Risk – Declining
Previous conservation statuses
2012 | Not Threatened
2009 | Not Threatened
2004 | Not Threatened
Indigenous. In New Zealand locally common from the Three Kings Islands and Te Paki south to Wellington. In the South Island, mainly eastern, uncommon. Also Stewart Island.
Florets are wind dispersed (Thorsen et al., 2009).
Two forms are present in New Zealand. The one described above is possibly the same as the Australian plant. Another form, apparently endemic to the swamps and bogs of the Central North Island, is probably distinct but it is unclear as to whether it is endemic, or also occurs in Australia. Research into this problem is underway.
References and further reading
Gardner, R. 2002. Identifying Deyeuxia avenoides and D. quadriseta (Gramineae). Auckland Botanical Society Journal, 57: 24-25
Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285-309