 These species generally occur in heathland communities which are greatly diverse and are of high conservation significance.The pretty leek orchid thrives in damp heathland and is so rare that the largest of the five known populations consists of fifty individuals.Several other heath species are classified as rare and vulnerable including the juniper wattle ("Acacia ulicifolia"), variable smoke bush ("Conospermum hookeri"), and the yellow onion orchid ("Microtis atrata)."