Peter J. Lang

Eucalyptus cretata, commonly known as Darke Peak mallee or chalky mallee, is a species of mallee or, rarely, a small, straggly tree and is endemic to a restricted part of South Australia. It has smooth whitish and grey bark, lance-shaped adult leaves, glaucous flower buds in groups of seven, white flowers and cup-shaped to barrel-shaped or conical fruit.

Acacia hexaneura, also known as Cowell spine-bush, is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a dense, spreading, rigid shrub with sessile, linear, rigid, sharply pointed phyllodes, spherical heads of golden yellow flowers and linear, crusty pods.

Eucalyptus pterocarpa is a species of mallet or tree that is endemic to a small area in the southwest of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, white flowers and conical or cup-shaped fruit.

Eucalyptus percostata, commonly known as the rib-capped mallee or Devils peak mallee, is a species of mallee that is endemic to South Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped to conical fruit. It is only known from a few locations in the Flinders Ranges.

Acacia praemorsa is a tree or shrub belonging to the genus Acacia and the subgenus Phyllodineae native to southern Australia. It is listed as vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 and is regarded as endangered in South Australia.

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Landerolaria arckaringensis (synonym Olearia arckaringensis), commonly known as Arckaringensis daisy, is a species of flowering plant in the family Asteraceae and is endemic to a restricted area of northern South Australia. It is a small, compact, rounded shrub with woolly-hairy foliage, coarsely-toothed, elliptic leaves and lavender or white and yellow, daisy-like inflorescences.

Goodenia valdentata, commonly known as Davenport Range goodenia, is a species of flowering plant in the family Goodeniaceae and is endemic to a restricted area of South Australia. It is a subshrub with erect branches, coarsely-toothed, egg-shaped leaves and bright yellow flowers usually arranged singly in upper leaf axils.

Pultenaea kraehenbuehlii is a species of flowering plant in the family Fabaceae and is endemic to a restricted area of South Australia. It is a dense, erect, many-branched shrub with hairy branches, narrowly egg-shaped to lance-shaped leaves with the narrower end towards the base, and yellow-orange and red flowers.

Goodenia asteriscus is a species of flowering plant in the family Goodeniaceae and is endemic to central Australia. It is a herb with spatula-shaped to lance-shaped leaves at the base of the plant, and clusters of up to 19, mostly yellow flowers without bracteoles, and does not closely resemble any other species of Goodenia.

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Landerolaria arckaringensis (synonym Olearia arckaringensis), commonly known as Arckaringensis daisy, is a species of flowering plant in the family Asteraceae and is endemic to a restricted area of northern South Australia. It is a small, compact, rounded shrub with woolly-hairy foliage, coarsely-toothed, elliptic leaves and lavender or white and yellow, daisy-like inflorescences.