Species

Raoulia petriensis

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.

Common Name(s)

Petries scabweed

Current Conservation Status

2012 - At Risk - Naturally Uncommon

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 - At Risk - Naturally Uncommon
2004 - Range Restricted

Qualifiers

2012 - RR, Sp

Authority

Raoulia petriensis Kirk

Family

Asteraceae

Flora Category

Vascular - Native

NVS Species Code

RAOPET

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

Dicotyledonous Herbs - Composites

Synonyms

None (first described in 1877)

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

Chromosome No.

2n = 28

Endemic Taxon

Yes

Endemic Genus

Yes

Endemic Family

No

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.

This page last updated on 17 Jan 2014