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Calystegia: Name is derived from the Greek words kalyx 'cup', and stege 'a covering', meaning 'a covered cup', the calyx of some bindweeds being enclosed in two bracts.
tuguriorum: growing around huts
Climbing convolvulus, NZ bindweed
Current Threat Status
2012 - Not Threatened
Previous Threat Status
2009 - Not Threatened
2004 - Not Threatened
Calystegia tuguriorum (G.Forst.) Hook.f.
Vascular - Native
Convolvulus tuguriorum G.Forst.
Indigenous. North, South, Stewart and Chatham Islands. Present in Chile and on the Juan Fernandez islands
Coastal to lowland. Usually in shrubland and along forest margins. occasional found on the margins of wetlands. It often favours grey scrub and bare lava or open rock strewn ground.
Perennial vine or scrambling plant producing numerous, slender, much-branched puberulent twinning stems. Often forming dense patches. Petioles up to 40 mm, slender. Leaves (10-)40(-50) x (15-)30(-40) mm broad-ovate to deltoid or reniform, entire or sinuate; base cordate, sinus shallow and broad; apex acute to acuminate. Peduncules terete to slightly winged, (30-)110 mm long, > leaves. Bracts broadly ovate to suborbicular; base cordate, apex apiculate. Sepals similar to and < or = bracts. Corolla (25-)50 x (30-)60 mm diam., funnelform, white. Capsule 8-12 mm, broad-ovoid. Seeds orange, smooth.
Could be confused with the only other consistently white-flowered Calystegia in New Zealand, C. marginata, which differs by its sagittate, fish-tailed leaves, shorter conspicuously winged peduncles, smaller flowers and black seeds which are ribbed and finely covered in protuberances. C. tuguriorum hybridises freely with C. soldanella (see under that species).
September - March
Main Flower Colour
Other Flower Colour
Present throughout the year.
Easy from seed and rooted pieces. Once established can be rather invasive and difficult to eradicate! Excellent growing through a hedge where the large white flowers can be seen to full effect and the creeping stems are more easily contained.
2n = 22
Putative wild hybrids between this species and C. soldanella are common. Some collections suggest that it may also hybridise with C. sepium subsp. roseata.
References and further reading
Allan, H.H. 1961: Flora of New Zealand. Vol. I. Wellington, Government Printer.
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.
Wilcox, M.D. 2002. Calystegia tuguriorum in Auckland. Auckland Botanical Society Journal 57: 25
Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. 1988: Flora of New Zealand. Vol. IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons.Christchurch, New Zealand, Botany Division, D.S.I.R..
This page last updated on 12 Nov 2014