Cistus x dubius Pourr.

Key facts

Parentage : C. laurifolius x C. salviifolius
Flower colour : white
Flower diameter : 6cm (pechii group)/4cm (costei group)
Height & Spread : 1m x 1.5m
Habit : rounded

Notes : a little-known, but valuable hybrid, hardy, compact and floriferous

Variants : pechii group (larger flowers) and costei group (more floriferous)