Hydrangea hydrangeoides, the Japanese hydrangea vine, is a species of flowering plant in the family Hydrangeaceae, native to Ulleungdo Island of South Korea, Japan, and the southern Kuril Islands.

[2][3] This may appear strange considering the current position of this taxon within the genus Hydrangea.

However, it was first described as a member of the genus Schizophragma[1] and the specific epithet was chosen to express a morphological similarity to the previously separate genus Hydrangea.

Under its synonym Schizophragma hydrangeoides its cultivars 'Roseum' and 'Moonlight' have gained the Royal Horticultural Society's Award of Garden Merit.

This article about plants of the order Cornales is a stub.