Raoulia petriensis
Common names
Petrie’s scabweed
Biostatus
Native – Endemic taxon
Category
Vascular
Structural class
Herbs - Dicotyledonous composites
Detailed description
Stems laxly branched, branches and branchlets ascending. Leaves densely imbricate, 4-6 × up to 3 mm, obovate-spathulate, apiculate; lower portion appressed, membranous, 3-nerved, more or less golden, silky-hairy; apical portion coriaceous, clad in dense felted white to yellowish tomentum, tip strongly thickened and recurved. Capitula 6-7 mm diameter; inner series of involucral bracts 4-5 mm long, linear, margins hyaline; tips white, more or less pubescent, radiate. Florets 30-50, female few. Achenes up to 1 mm long, finely pubescent; pappus-hairs c.50, c.4 mm long, mainly compressed, thickened and papillate at tips, a few slender and hardly thickened at tips
Distribution
Endemic. South Island: East of the main divide in Central Otago and northern Southland
Habitat
Subalpine rocky places and fellfield
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 – Naturally Uncommon | Qualifiers: RR, Sp
Threats
A narrow range endemic common within its known geographic range
Detailed taxonomy
Family
Asteraceae
Synonyms
None (first described in 1877)
Endemic taxon
Yes
Endemic genus
Yes
Endemic family
No
Ecology
Flowering
December - February
Fruiting
February - April
Propagation technique
Difficult - should not be removed from the wild
Other information
Where To Buy
Not commercially available
Etymology
raoulia: Named after Étienne Fiacre Louis Raoul (23 July 1815–30 March 1852) who was a French naval surgeon and naturalist. He published a book Choix de plantes de la Nouvelle-Zélande (“Selected plants of New Zealand”) in 1846. The genus was named after him by Joseph Hooker.
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.
RAOPET
Chromosome number
2n = 28
Previous conservation statuses
2017 | At Risk – Naturally Uncommon | Qualifiers: RR, Sp
2012 | At Risk – Naturally Uncommon | Qualifiers: RR, Sp
2009 | At Risk – Naturally Uncommon
2004 | Range Restricted
Referencing and citations
References and further reading
Allan, H.H. 1961: Flora of New Zealand. Vol. I, Government Printer, Wellington.
Attribution
Description adapted from Allan (1961).
Some of this factsheet information is derived from Flora of New Zealand Online and is used under a Creative Commons Attribution 3.0 New Zealand licence.