Thomasia is a genus of thirty-one species of flowering plants in the family Malvaceae. Plants in this genus are small shrubs that are endemic to the south-west of Western Australia, apart from T. petalocalyx that is native to Victoria and South Australia. The leaves are simple with leaf-like stipules at the base of the petiole, the flowers bisexual with five papery, petal-like sepals, usually five petals and five stamens opposite the petals. The fruit is a capsule covered with star-like hairs.
Thomasia quercifolia, commonly known as oak leaved thomasia, is a flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It has egg-shaped, lobed leaves with a heart-shaped base, and pink to mauve flowers.
Androcalva fraseri, commonly known as blackfellow's hemp or brush kurrajong, is a species of flowering plant in the family Malvaceae and is endemic to eastern Australia. It is a small tree or shrub that forms suckers and has egg-shaped or lance-shaped leaves with serrated edges, and clusters of 13 to 21 white flowers.
Guichenotia ledifolia is a species of flowering plant in the family Malvaceae and is endemic to the southwest of Western Australia. It is a densely-branched shrub with densely hairy new growth, hairy, linear to oblong leaves and pink to mauve flowers arranged in groups of three to ten.
Thomasia solanacea is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It is an erect, bushy shrub with egg-shaped leaves, the bases heart-shaped, and racemes of white, cream-coloured or pink to purple flowers.
Seringia hermanniifolia, commonly known as crinkle-leaved firebush, is a species of flowering plant in the mallow family and is endemic to the south-west of Western Australia. It is a low-growing or prostrate, suckering shrub with hairy new growth, hairy, wavy, oblong to egg-shaped leaves and mauve to bluish flowers arranged in groups of 3 to 8.
Thomasia angustifolia, commonly known as narrow-leaved thomasia, is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It has densely hairy young stems, narrowly oblong, wrinkled leaves and pinkish-purple, bell-shaped flowers.
Thomasia petalocalyx, commonly known as paper flower, is a species of flowering plant in the family Malvaceae and is endemic to southern Australia. It is a shrub with wrinkled, oblong to egg-shaped leaves and cup-shaped mauve flowers.
Thomasia triphylla is a small shrub that is endemic to the south-west of Western Australia. The flowers are pinkish-purple, bell-shaped and hang in pendents from the leaf axils.
Thomasia dielsii is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It is a low, erect to spreading shrub with egg-shaped leaves with wavy edges, and purple, violet and blue flowers.
Thomasia discolor is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It is a small, compact shrub with hairy new growth, heart-shaped leaves with wavy, lobed edges, and pink flowers in crowded clusters.
Thomasia × formosa is a species of flowering plant in the family Malvaceae and is endemic to a restricted area of the south-west of Western Australia. It is an erect, compact shrub with densely hairy branchlets, hairy, coarsely serrated, egg-shaped to elliptic or oblong leaves, and racemes of pink or purple flowers arranged in leaf axils.
Thomasia glabripetala is a species of flowering plant in the family Malvaceae and is endemic to a restricted area of the south-west of Western Australia. It is an open shrub with densely hairy branchlets, sparsely hairy, wrinkled, elliptic or oblong leaves, and racemes of purplish-pink flowers arranged in leaf axils.
Commersonia grandiflora is a species of flowering plant in the family Malvaceae and is endemic to the south of Western Australia. It is an erect, open shrub with hairy, egg-shaped to elliptic leaves, and white or cream-coloured flowers.
Commersonia erythrogyna, commonly known as Trigwell's rulingia, is a species of flowering plant in the family Malvaceae and is endemic to a restricted part of the south-west of Western Australia. It is an open, straggly shrub with oblong to egg-shaped leaves and creamy-white flowers.
Androcalva argentea is a species of flowering plant in the family Malvaceae and is endemic to Queensland. It is a tall shrub that forms suckers from rhizomes and has silvery branchlets and leaves, the leaves egg-shaped with wavy edges and serrated, and dense clusters of 10 to 30 white to cream-coloured flowers.
Androcalva gaudichaudii is a species of flowering plant in the family Malvaceae and is endemic to the far west of Western Australia. It is a low, dense shrub that forms suckers and has broadly oval leaves with a heart-shaped base, and clusters of 2 to 11 white flowers.
Androcalva inglewoodensis is a species of flowering plant in the family Malvaceae and is endemic to south-eastern Queensland. It is a spreading, prostrate shrub that has hairy young branchlets, egg-shaped to elliptic leaves with irregularly serrated edges, and small groups of white to cream-coloured flowers.
Seringia adenolasia is a species of flowering plant in the family Malvaceae and is endemic to northern Australia. It is a sticky, aromatic densely hairy shrub with egg-shaped to lance-shaped leaves sometimes with toothed edges, and creamy-pink or purple flowers, usually in groups of up to 5.
Seringia collina is a species of flowering plant in the family Malvaceae and is endemic to Queensland. It is a low growing, small rounded shrub with hairy branches, oblong to egg-shaped leaves and usually purple flowers in groups of 3 to 6.
