Species

Helichrysum dimorphum

Etymology

Helichrysum: From the Greek words helios 'sun' and chrysos 'gold', referring to the colour of the flowers of some species

Common Name(s)

Climbing everlasting daisy

Current Conservation Status

2012 - Threatened - Nationally Vulnerable

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 - Declining
2004 - Threatened - Nationally Endangered

Qualifiers

2012 - Sp
2009 - Sp

Authority

Helichrysum dimorphum Cockayne

Family

Asteraceae

Brief Description

Rare climbing shrub with untidy brownish twigs inhabiting dry inland Canterbury. Leaves of two types: small (5mm) and narrow with a white underside on the base of twigs and scale-like and embedded in fuzzy stem towards the tip of twigs. Flowers small, dry, at tip of twigs.

Flora Category

Vascular - Native

NVS Species Code

HELDIM

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 Lianes and Related Trailing Plants

Synonyms

None

Distribution

Endemic to the South Island. Presently known only from the Poulter, Esk and Puffer catchments where they drain into the Waimakariri River. However, there is also an old record from Piano Flat, Southland.

Habitat

A species of lowland to montane situations. Usually found on river terraces and alongside river gorges. Always in grey scrub, where it is primarily associated with matagouri (Discaria toumatou Raoul) shrubs.

Features

Weakly lianoid, sparingly branched scrambler, producing numerous fine stems up to 8 m long. Juvenile and shade leaves 5 x 2 mm, brown or grey-black, spreading, ovate-oblong, apex subacute and mucronate, upper leaf surface glabrous, under surface covered in white wispy hairs. Leaves of terminal branches or exposed branches, overlapping, scale -like, appressed, 3 x 1 mm, linear-lanceolate, strongly keeled, tomentose, base clad in dense, floccose tomentum. Capitula subcylindric, terminal, 3.5 mm diam., phyllaries (bracts) in 2-3 series, outer bracts oblong, inner narrow-oblong, margins finely toothed. Florets 15-25. Achenes (seeds) narrow-oblong, glabrous, pappus hairs slender and numerous.

Similar Taxa

None

Flowering

September - February

Fruiting

October - March

Propagation Technique

Easily grown from fresh seed and semi-hardwood cuttings. Established plants layer easily. Does best in semi-shade or planted at the base of a shrub through which it can sprawl. Does not like humid climates.

Threats

Seriously threatened by aerial spraying for gorse (Ulex europaeus L.), and by scrub fires. This species often grows within and through matagouri (Discaria toumatou) so it is easily overlooked. Matagouri is easily burned and considered to be a pest in some parts of the country. Clearance of matagouri may have been a factor in the historic decline of Helichrysum dimorphum, and remains a serious potential threat to this day.

Chromosome No.

2n = 28

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

Life Cycle and Dispersal

Pappate achenes are dispersed by wind (Thorsen et al., 2009).

Where To Buy

Occasionally sold in garden centres.

 

Attribution

Fact Sheet prepared for NZPCN by P.J. de Lange 2 October 2003. Description modified from Allan (1961).

References and further reading

Allan, H.H. 1961: Flora of New Zealand. Vol. I. Government Printer, Wellington.

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

This page last updated on 9 Apr 2015