'L. brownii var. australe' (Lilium)

Found in southern China and Hong Kong, this is a tender lily. Used at Oregon Bulb Farm by lily pioneer, Jan de Graaff, where it was known to grow over 8 feet in height; this variant was considered by him to be very useful for hybridizing. Flowers are pure white inside and carry a very faint green flush on the exterior. We have never grown this sub species and thank whomever sent this photo decades ago, labeled only as Lilium brownii var. australe at Bunny's. Any "old timers" know who "Bunny" might be?