Robyn Mary Barker

Rostellularia adscendens is an Australian plant species in the family Acanthaceae. It grows to between 10 and 50 cm high. It occurs along streams or in rocky areas in woodland in Western Australia, the Northern Territory, South Australia, New South Wales and Queensland. The taxon was first formally described by botanist Robert Brown in 1810 in Prodromus Florae Novae Hollandiae. He gave it the name Justicia adscendens. The species was transferred to the genus Rostellularia in 1986 by R.M. Barker. Subspecies and varieties include Rostellularia adscendens (R.Br.) R.M.Barker var. adscendens

Rhaphidospora cavernarum is a plant species in the family Acanthaceae. The species was thought to be extinct in Queensland until rediscovered on Cape York, between Cooktown and the Lockhart River. Previous to this, the species had not been seen since 1873.

Hakea pendens is a flowering plant in the family Proteaceae and endemic to a small area in the Goldfields-Esperance regions of Western Australia. It is a small shrub with needle-like leaves and pendulous pink flowers.

Hakea psilorrhyncha is a flowering plant in the family Proteaceae, it is endemic to a small area on the west coast in the Wheatbelt and Mid West regions of Western Australia. It has needle-shaped, sharply pointed leaves and clusters of scented brownish yellow flowers.

Hakea oligoneura is a small rare shrub known from only a few populations south of Perth, Western Australia growing exclusively on coastal limestone ridges. It has cream-white flowers and stiff, thick yellow-greenish leaves.

Hakea newbeyana is a shrub in the family Proteaceae and is endemic to an area in the southern Wheatbelt and Goldfields-Esperance regions of Western Australia. It is a prickly shrub with smooth grey bark and sweetly scented cream-yellow flowers in profusion in spring.

Hakea megadenia is a shrub or tree of the family Proteaceae endemic to an area along the east coast of Tasmania and the Furneaux Island group off the coast of Tasmania.

Hakea longiflora is a species of small shrub in the family Proteaceae and is endemic to Western Australia. It has sharp, short, needle-like leaves with white flowers and a prominent red style.

Hakea horrida is a shrub in the family Proteaceae and is endemic to an area in the Wheatbelt, Great Southern and Goldfields–Esperance regions of Western Australia. It is a small dense shrub, extremely prickly with large creamy white scented flowers.

Hakea chromatropa is a species of shrub found in Southwest Australia. The distribution is restricted to an area around Wongan Hills, where it is found on gravelly loam in open shrubland. The flowers are white or creamy, becoming pink, and without a scent.

Hakea bicornata is a shrub in the family Proteaceae native to Western Australia, with attractive creamy-white flowers and fruit with two distinctive horns.

Xerothamnella herbacea is a species of plant in the acanthus family that is endemic to Australia.

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Hakea recurva subsp. arida is a plant in the family Proteaceae endemic to the south-west of Western Australia.

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