This shrub is on the east side of the Philadelphus Walk.

Supplier unknown.

Philadelphus × lemoinei is an ornamental shrub. In 1884, Victor Lemoine crossed Philadelphus microphyllus with Philadelphus coronarius and produced a hybrid plant which he named Philadelphus lemoinei. Many cultivars of this hybrid are in cultivation.

Cultivar ‘Dame Blanche’ is characterised as having slightly fragrant flowers which are about 2.5 cm wide, double or semi-double, up to nine in a raceme. Leaves dark green, smooth and almost glabrous above, slightly hairy beneath, narrowly to broadly ovate, 10 to 15 cm long, with a few distant, shallow teeth.

Pierre Louis Victor Lemoine (1823 – 1911) was a celebrated and prolific flower breeder based in Nancy, France.

‘Dame Blanche’ is: a mythical figure in European folklore; an intelligence network in WW1 Belgium and a Belgian desert.