Probably the species P. walteri.
Plant introduced in 1985.
A small to medium shrub with masses of white flowers in spring.
A hybrid, P. lasianthos × P. phylicifolia, raised as a seedling from P. 'Snow Queen' by Leo Hodge, c. 1963.
A small evergreen shrub with a mass of white flowers in spring.
Probably originating in the mid-1970s.