Scientific Name:
Petunia Juss., Ann. Mus. Natl. Hist. Nat. 2: 215-216 (1803)

Unarmed annual or perennial herbs, glandular-hairy and ± viscid.  Lvs mostly alternate, simple, entire, petiolate.  Fls solitary and axillary or in terminal racemes with the lvs gradually passing into bracts.  Calyx deeply 5-toothed;  teeth linear, oblong, or spathulate.  Corolla funnelform or salverform, rolled inwards in bud, of most colours;  tube with narrow-cylindric base;  lobes 5, shallow, equal or slightly irregular with limb slightly oblique. Stamens included, 4 in 2 pairs, with 1 small or rudimentary staminode inserted around or below middle of corolla tube.  Capsule small; valves 2.  Seeds numerous, tiny, rugose.

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

Number of species and named hybrids in New Zealand within Petunia Juss.
Exotic: Fully Naturalised1
Exotic: Casual1
Jussieu, A.L. de 1803: Sur le Petunia, genre nouveau de la famille des plantes solanées. Annales du Muséum National d'HistoireNnaturelle 2: 214–216.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.