Scientific Name:
Escallonia Mutis ex L.f., Suppl. Pl. 21 (1782)
Vernacular Name(s):

Evergreen, densely branched shrubs or trees.  Lvs alternate, simple, often in clusters in axils of larger lvs, glossy, entire or serrate, usually dotted below with oil glands.  Infl. usually terminal, rarely axillary, racemose or paniculate.  Calyx forming a 5-lobed rim surrounding hypanthium.  Petals 5, long-clawed, free but overlapping and often forming a tube.  Stamens 5.  Ovary inferior, enclosed in an obconic hypanthium. Capsule rounded, with persistent, elongated style.

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

Number of species and named hybrids in New Zealand within Escallonia Mutis ex L.f.
Exotic: Fully Naturalised3
Linnaeus, C. von f. 1782: Supplementum Plantarum. Orphanotrophe, Brunswig.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.