Scientific Name:
Convolvulus L., Sp. Pl. 153 (1753)

Annual or perennial herbs, sometimes small shrubs, usually with twining or trailing stems but occasionally erect.  Latex present, usually white.  Lvs petiolate, entire or lobed, often sagittate.  Fls solitary or in axillary or terminal cymes, occasionally in dense involucrate heads.  Bracts minute or subequal to calyx but not concealing it.  Sepals 5, equal or unequal.  Corolla 5-lobed, funnelform, variously coloured, the mid-petaline bands often differently coloured and hairy.  Stamens 5, included, inserted at base of corolla tube.  Ovary surrounded by an annular disc, 2-locular;  each loculus with 2-ovules.  Style included.  Stigma 2-lobed.  Capsule usually 2-celled and 4-seeded, usually globose or subglobose.  Seeds usually glabrous but sometimes verrucose.

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

Indigenous (Non-endemic)
Number of species in New Zealand within Convolvulus L.
Indigenous (Endemic)3
Exotic: Fully Naturalised2
Exotic: Casual2
Heenan, P.B.; Molloy, B.P.J.; de Lange, P.J. 2003: Species of Convolvulus (Convolvulaceae) endemic to New Zealand. New Zealand Journal of Botany 41(3): 447–457.
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.
Wood, J.R.; Williams, B.R.; Mitchell, T.C.; Carine, M.A.; Harris, D.J.; Scotland, R.W. 2015: A foundation monograph of Convolvulus L. (Convolvulaceae). PhytoKeys 18(51): 1–282.