Are both Nerium or Thuja could be a shrub?
Thuja Thuja ( ) is a genus of coniferous trees in the Cupressaceae (cypress family). There are five species in the genus, two native to North America and three native to eastern Asia. The genus is monophyletic and sister to "Thujopsis". Members are commonly known as arborvitaes, (from Latin for "tree of life") thujas or cedars.
Zieria murphyi Zieria murphyi, commonly known as Murphy's zieria, is a plant in the citrus family Rutaceae and endemic to New South Wales. It is a slender shrub with simple, or three-part leaves and between three and nine white to pale pink flowers with four petals and four stamens arranged in the leaf axils. It usually grows in sheltered places in open forest, often at the base of cliffs.