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Shrub or tree to 14 m, rather densely branched and with a columnar habit. Bark smooth and blackish brown. Branchlets light brown, terete to ridged, glabrous to pubescent and resinous. Leaves evergreen and leathery, opposite and crowded, simple, 0.4–1.4 × 0.2–0.6 cm, elliptic to oblong, upper surface dark green and glossy, lower surface glaucous and glabrous, venation conspicuous on both surfaces, five to seven secondary veins on each side of the midvein, margins entire, apex strongly emarginate; petiole to 0.2 cm long, glabrous; stipules ovate, blackish brown, to 0.1 cm long. Monoecious; flowers hermaphrodite, pedicellate, solitary and axillary, subtended by brown bracts; petals white, to 0.8 cm long. Fruit a dark brown woody or leathery capsule to 1 cm long, with four to five valves; each valve holding one to two winged seeds. Flowering January to May, fruiting March to July (Australia) (Bausch 1938; Dress 1956).
Two subspecies are recognised: subsp. milliganii from northern Tasmania, with glabrous leaf undersides, and subsp. pubescens, from southern Tasmania, with pubescent leaf undersides
Habitat To 1050 m asl
USDA Hardiness Zone 8
RHS Hardiness Rating H5
Conservation status Not evaluated (NE)
Taxonomic note The two Tasmanian species of Eucryphia, E. milliganii and E. lucida (Labill.) Baill., are closely related and readily form hybrids (Eucryphia × hybrida) in the wild (Bausch 1938). Both may be found in horticulture. Some authors have considered E. milliganii to be merely a stunted, alpine form of E. lucida, (Bausch 1938; Dress 1956), but the distinctions are quite clear.
Eucryphia milliganii subsp. milliganii was introduced by Harold Comber in 1929 but received only an undeservedly short note from Bean (1981a). It is a most attractive small tree, forming a column of dense small dark leaves sprinkled over with the pure white flowers, perhaps more resembling a myrtle than other eucryphias. There is an exceptionally fine example at Logan House (adjacent to Logan Botanical Garden), approximately 9 m tall in 2006 (dbh 32 cm), and covered in flowers when seen in late July. TROBI records a scattering of good specimens along the western fringes of the British Isles, but it also grows well away from the mildest areas (for example, at the Hillier Gardens). A cool site with abundant moisture and soil that is more or less lime-free seem to be important. Its frost tolerance is not known, but –10ºC is suggested as a limit for the closely related E. lucida (Hogan 2008). It seems to be rare in Europe, and also in the United States although it is in cultivation in the western states, where it should do well in milder coastal areas.
This subspecies differs from typical E. milliganii in having ovate leaves with a pubescent underside, a dense fringe of trichomes on the leaf margins, and white or pink flowers. Barnes, R.W. et al. (2000)
RHS Hardiness Rating: H5
The broader leaves with their hairy undersides make this taxon easily distinguishable from subsp. milliganii. It is represented in cultivation by the clone ‘Pink Whisper’, discovered by Alan Gray and Ken Gillanders in Tasmania in 1976, which has pale pink flowers (Coombes 2007). This clone has also been attributed to E. × hybrida (Seaforde Gardens 2007). Cuttings of ‘Pink Whisper’ were brought home from Australia by Sir Harold Hillier in 1977, but it remains rare. There is a 4 m specimen at the Hillier Gardens, and it is commercially available in the United Kingdom.