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An evergreen tree to 10 m tall, leaves usually pinnate with 3–5(–9) leaflets, glaucous beneath, margins entire, the terminal leaflet always largest, narrowly oblong-elliptic, to 6 × 1.5 cm, lateral leaflets oblong, to 3 × 1 cm. Leaf apices rounded or shortly mucronate, mucro to 2 mm. Solitary, white cup-shaped flowers to 3.5 cm across are borne in mid-late summer. (Cullen et al. 2011).
USDA Hardiness Zone 8b-11
RHS Hardiness Rating H5
A hybrid between the ‘mainland’ Australian Eucryphia moorei and the Tasmanian E. lucida, which was described from a self-sown plant found in Hillier’s Chandlers Ford nursery in 1953. This original cross was propagated and distributed under the cultivar name ‘Winton’ and it is this clone that is now in general cultivation. It can be distinguished from other pinnate-leaved species and hybrids by its entire margins (toothed in E. glutinosa and E. × intermedia). From E. moorei, E. × hilleri can be distinguished by its rounded or very shortly mucronate leaf apices (strongly mucronate in E. moorei) and more generally by its shorter and broader lateral leaflets of which there are (usually) fewer.
A tree grown as ‘Winton’ had, by 2012, reached 9 m height and 26 cm dbh at Achamore on the Isle of Gigha, on the west coast of Scotland, and another specimen at Castlewellan, County Down, Northern Ireland, was 14 m height when last measured in 2015, but this is not attributed to ‘Winton’ and so may descend from a separate hybridisation event (The Tree Register 2018).
This is a very attractive hybrid, hardier than its E. moorei parent, and it deserves to be more widely planted.
Discussed in the entry for E. × hillieri.