Pennantia baylisiana x P. corymbosa (known also as P. 'Otari Debut').
One of the more bizarre plantings on the island. A single tree growing in old orchard. Obviously a recent planting on the island as this hybrid (which first appeared spontaneously near the parent species at Otari Native Plant Gardens, Wilton, Otari) has only been known about since the late 1980s.
Voucher: P.J. de Lange 13943, AK, WELT