Apium is a genus of about 20 species of flowering plants in the family Apiaceae, with a subcosmopolitan distribution in Europe, Asia, Africa, South America and Australia. They are medium to tall biennials or perennials growing up to 1 m high in the wet soil of marshes and salt marshes, and have pinnate to bipinnate leaves and small white flowers in compound umbels. Some species are edible, notably Apium graveolens, which includes the commercially important vegetables celery, celeriac and Chinese celery. Apium bermejoi from the island of Menorca is one of the rarest plants in Europe, with fewer than 100 individuals left.
Banksia acanthopoda is a species of shrub in the family Proteaceae. It grows as a small spreading shrub to 2 m high and has prickly leaves and yellow composite flower heads, called inflorescences, composed of 50 to 60 individual yellow flowers. Flowering takes place in the southern hemisphere winter. Endemic to Western Australia, it occurs only in a few populations in the vicinities of Woodanilling, Katanning and Darkan. Because of its rarity, it is classed as "Priority Two" conservation flora by Western Australia's Department of Environment and Conservation.
Emblingia is a monospecific plant genus containing the species Emblingia calceoliflora, a herbaceous prostrate subshrub endemic to Western Australia. It has no close relatives, and is now generally placed alone in family Emblingiaceae.
Thysanotus is a genus of perennial herbs in the family Asparagaceae, subfamily Lomandroideae. They are mostly native to Australia with 45 of the 50 known species occurring in Western Australia alone, although a few species range northward into New Guinea and Southeast Asia as far north as southern China.
Althenia is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, Lepilaena.
Acidonia microcarpa is a species of shrub in the plant family Proteaceae. It is the only species in the genus Acidonia. It is endemic to the south coast of the Southwest Botanic Province of Western Australia.
Dichopogon is a genus of perennial herbs, native to Australia and New Guinea. It is included in the genus Arthropodium by some authorities, although recognized as a distinct genus by others. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Lomandroideae.
Drosera erythrorhiza, the red ink sundew, is a perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in a rosette and is distinguished from the other species in section Erythrorhiza by its many-flowered cymose inflorescences with up to 50 individual flowers. D. erythrorhiza was first described by John Lindley in his 1839 publication A sketch of the vegetation of the Swan River Colony. In 1992, N. G. Marchant and Allen Lowrie described three new subspecies, thus also creating the autonym D. erythrorhiza subsp. erythrorhiza. The subspecies were separated from this variable species mostly by leaf morphology and distribution.
Laxmannia is a genus of tufted perennial herbs in the family Asparagaceae, subfamily Lomandroideae, that are endemic to Australia.
Chamaexeros is a genus of tufted perennial herbs in the family Asparagaceae, subfamily Lomandroideae.
Drosera menziesii, the pink rainbow, is an erect or scrambling perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and grows in a variety of habitats, including winter-wet depressions, swamps, and granite outcrops in clay or peat sand soils or loam. D. menziesii produces small, circular carnivorous leaves along an undulating erect stem that can be .05–1.1 m (0.2–3.6 ft) high. Its pink flowers emerge from July to November.
Adenanthos detmoldii, commonly known as Scott River jugflower or yellow jugflower, is a species of shrub in the family Proteaceae. It is endemic to the south-west of Western Australia.
Borya is a genus of flowering plants in the family Boryaceae, endemic to Australia.
Grevillea brachystylis, also known as short-styled grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a low, spreading to erect shrub with linear to narrow egg-shaped leaves with the narrow end towards the base, and wheel-like clusters of hairy red flowers.
Grevillea haplantha is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a dense, rounded shrub with linear leaves and clusters of pink to red flowers with white or brown hairs, depending on subspecies.
Petrophile conifera is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a bushy, much-branched shrub with pinnate, sharply-pointed leaves, and oval heads of hairy, cream-coloured to yellowish white flowers.
Petrophile divaricata is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a shrub with bipinnate, sharply-pointed leaves, and oval to oblong heads of hairy, yellow flowers.
Daviesia divaricata, commonly known as marno, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a low, spreading or erect and bushy shrub with phyllodes reduced to small, triangular scales, and orange and maroon flowers.
Laxmannia squarrosa is a species of Laxmannia, a genus of tufted perennial herbs in the family Asparagaceae, subfamily Lomandroideae, which is endemic to Western Australia. From 0.03 to 0.1 m high, it grows on gravel and lateritic sand, and its white flowers may be seen from September to November.
Roycea is a genus of plants formerly in the family Chenopodiaceae, and now in the Amaranthaceae. The genus was first described in 1948 by Charles Austin Gardner, and the genus name honours Robert Dunlop Royce. The entire genus is endemic to Western Australia. There are no synonyms.
