Koeleria arduana
Biostatus
Native
Category
Vascular
Structural class
Grasses
Distribution
Indigenous. In New Zealand scattered throughout from the Three Kings and North Island, south to Marlborough in the South Island. Recently (1998) discovered on Norfolk Island.
Habitat
Usually coastal on rocky headlands, cliff faces and boulderfield. Shows a distinct preference for basalt, limestone and ultramafic rocks but can also be common around bird nesting grounds. Often found inland on limestone outcrops in the Waikato, and on apatite-rich greywacke rock facies around Wellington and Wairarapa.
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2022-2023 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website. This report includes replaces all previous NZTCS lists for vascular plants. Previous assessments can be found here.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – these interim threat classification statuses has not been assessed by the NZTCS panel.
- Conservation status of vascular plants in Aotearoa New Zealand, 2023. 2024. Peter J. de Lange, Jane Gosden, Shannel P. Courtney, Alexander J. Fergus, John W. Barkla, Sarah M. Beadel, Paul D. Champion, Rowan Hindmarsh-Walls, Troy Makan and Pascale Michel Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2023 | At Risk – Declining | Qualifiers: DPR, DPS, DPT
Threats
Not Threatened but has declined over the northern part of its range.
Detailed taxonomy
Family
Poaceae
Synonyms
Trisetum arduanum Edgar et A.P.Druce
Endemic taxon
No
Endemic genus
No
Endemic family
No
Ecology
Propagation technique
Easy from fresh seed and rooted pieces. A very attractive grass for a sunny, well drained place within a rockery, or within a hanging basket.
Other information
Etymology
koeleria: Named after George Ludwig Koeler (1765-1807), 18th century German botanist. Author of a work on the grasses of Germany and France, Descriptio graminum in Gallia et Germania (1802).
Manaaki Whenua Online Interactive Key
NVS code
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.
TRIARD
Chromosome number
2n = 28
Previous conservation statuses
2017 | Not Threatened
2012 | Not Threatened
2009 | Not Threatened
2004 | Not Threatened
Referencing and citations
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Koeleria arduana Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/koeleria-arduana/ (Date website was queried)