Appearance
''Zieria prostrata'' is a prostrate or low, scrambling shrub with glabrous, ridged branches and which grows to a height of 0.5–1 m. Its leaves are composed of three narrow oval leaflets with the middle leaflet 10–16 mm long and 4–6 mm wide and the others smaller. Both surfaces of the leaf are the same colour, dotted with oil glands and glabrous, with a stalk 3–4 mm long.The flowers are pink in the bud stage but turn white as they open. They are arranged in groups of mostly 3 to 7 in leaf axils and the groups are usually much shorter than the leaves. The four sepal lobes are about 0.5 mm long, the four petals are 2–2.5 mm long and in common with other zierias, there are only four stamens. Flowering mainly occurs from late August to late September or October and is followed by fruit which is a follicle composed of up to four sections joined at the base and which burst open to release their seeds when ripe.
Naming
''Zieria prostrata'' was first formally described in 1996 by James Andrew Armstrong in ''Australian Native Plants: propagation, cultivation and use in landscaping''. The specific epithet is a Latin word meaning "down flat" or "laid low".Distribution
This zieria grows in low coastal heathland on headlands in a single nature reserve near Coffs Harbour. It is difficult to count the population size but the National Parks and Wildlife Service estimated about one thousand individuals in 1998. Other headlands along the New South Wales coastline have similar zierias and it is possible that other populations of this species may yet be discovered.Status
''Zieria prostrata'' is classified as "Endangered" under the Commonwealth Government ''Environment Protection and Biodiversity Conservation Act 1999'' Act. The main threat to its survival is invasion by introduced species, especially kikuyu, bitou bush and lantana.References:
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