Nomenclature
Scientific Name:
Calystegia marginata R.Br.
 Description

Glabrous perennial with creeping rhizome and slender twining branches. Petioles slender, to c. 5 cm long. Lamina 2.5–8 × 1.5–4.5 cm, sagittate, narrowly to broadly triangular; apex acute to acuminate; basal lobes acute and sometimes toothed; basal sinus broad and rounded. Fls usually solitary; peduncles narrowly winged, usually 1–2.5 cm long. Bracts broad-ovate, obtuse, c. 1 cm long. Sepals broad-ovate, < bracts, obtuse. Corolla c. 15 × 12 mm, white, campanulate. Ovary imperfectly 2-locular. Capsule c. 6 mm diam., globose. Seeds black, reticulately ribbed.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Indigenous (Non-endemic)
 Phenology

Flowering: Nov.–May.

 Bibliography
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [Naturally uncommon]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76.
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Naturally Uncommon]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Naturally Uncommon]