Vascular – Native
Lianes & Related Trailing Plants - Dicotyledons
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.
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: DP, Sp
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: Sp
2009 | At Risk – Naturally Uncommon
2004 | Sparse
Endemic. Eastern South Island from Marlborough (upper Awatere) south to Central Otago (Kawerau Gorge)
Montane in dry open, short-tussock grassland usually in or near rock outcrops, also on semi-stable scree and outcrops at the head of screes.
Rhizomatous, shortly creeping to lianoid, perennial herb arising from stout, fleshy, root stock. Stems slender up to 300 mm long. Petioles slender, 10-25 mm long, silky hairy. Leaves heterophyllous, 5-50 x 1-10 mm, green, yellow-green, grey-green, to silvery-grey; densely to sparsely silky hairy, deltoid, deltoid-ovate,broad-oblong, oblong to hastate some at least with filiform or linear terminal lobe and smaller basal lobes. Flowers axillary, solitary, peduncles filiform. Bracts paired, narrow linear. Sepals unequal, 5-7 mm, broad-ovate, covered with appressed hairs, apex obtuse. Corolla white or pink, 20 x 20 mm, when open, mid-petalline band pink. Capsule 7 mm diam., globose. Seeds black finely reticulate, reticulation made of short, narrow ridges.
Convolvulus verecundus Allan and C. waitaha (Sykes) Heenan, Molloy et de Lange, from which C. fractosaxosa differs by its lianoid stems being up to 300 mm long, and by its heterophyllous foliage, with at least some lamina possessing a filiform or linear terminal lobes and smaller basal lobes.
November - February
January - March
Seeds are wind dispersed (Thorsen et al., 2009).
Has not been successfully cultivated.
As far as is known not threatened but not common either. It appears to be a naturally uncommon, biologically sparse species.
convolvulus: From Latin convolvere, which means to twine around
fractosaxosa: From the Latin fractos ‘broken’ and saxum ‘rock’, meaning found on broken rocks.
Fact sheet prepared by P.J. de Lange for NZPCN (1 June 2013)
References and further reading
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
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Convolvulus fractosaxosa Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/convolvulus-fractosaxosa/ (Date website was queried)