''Tetratheca decora'', also known as black-eyed susan, is a species of plant in the

quandong Quandong, quandang or quondong is a common name for the species ''Santalum acuminatum'' (desert, sweet, Western quandong), especially its edible fruit, but may also refer to: * ''Aceratium concinnum'' (highroot quandong) * ''Peripentadenia mearsi ...

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

that is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to Australia.

Description

The species grows as a small, erect

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

to 30–40 cm in height. The deep lilac-pink flowers have petals 6–15 mm long, appearing mainly from September to November.

Distribution and habitat

The plants have a scattered distribution across central eastern

New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...

from the

Warrumbungles The Warrumbungles is a mountain range in the Orana region of New South Wales, Australia. The nearest town is Coonabarabran. The area is easiest accessed from the Newell Highway which is the major road link directly between Melbourne, Victoria ...

to the

Nowra Nowra () is a city in the South Coast, New South Wales, South Coast region of New South Wales, Australia. It is located south-southwest of the state capital of Sydney (about as the crow flies). As of the 2021 census, Nowra has an estimated po ...

area, occurring in

heath A heath () is a shrubland habitat found mainly on free-draining infertile, acidic soils and is characterised by open, low-growing woody vegetation. Moorland is generally related to high-ground heaths with—especially in Great Britain—a coole ...

and dry

sclerophyll Sclerophyll is a type of vegetation that is adapted to long periods of dryness and heat. The plants feature hard leaves, short Internode (botany), internodes (the distance between leaves along the stem) and leaf orientation which is parallel or ...

forest on

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

substrates.

References

decora Flora of New South Wales Oxalidales of Australia Taxa named by Joy Thompson Plants described in 1976 {{Australia-rosid-stub