Raoulia petriensis
Common name
Petrie’s scabweed
Synonyms
None (first described in 1877)
Family
Asteraceae
Flora category
Vascular – Native
Endemic taxon
Yes
Endemic genus
Yes
Endemic family
No
Structural class
Herbs - Dicotyledonous composites
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
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) – more information about this can be found on the NZTCS website. This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – an interim threat classification status has not been assessed by the NZTCS panel.
- Conservation status of New Zealand indigenous vascular plants, 2017 . 2018. 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. Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2017 | At Risk – Naturally Uncommon | Qualifiers: RR, Sp
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: RR, Sp
2009 | At Risk – Naturally Uncommon
2004 | Range Restricted
Distribution
Endemic. South Island: East of the main divide in Central Otago and northern Southland
Habitat
Subalpine rocky places and fellfield
Features
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
Flowering
December - February
Fruiting
February - April
Propagation technique
Difficult - should not be removed from the wild
Threats
A narrow range endemic common within its known geographic range
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.
Where To Buy
Not commercially available
Attribution
Description adapted from Allan (1961).
References and further reading
Allan, H.H. 1961: Flora of New Zealand. Vol. I, Government Printer, Wellington.