Eucalypt is a descriptive name for woody plants with capsule fruiting bodies belonging to seven closely related genera found across Australasia: Eucalyptus, Corymbia, Angophora, Stockwellia, Allosyncarpia, Eucalyptopsis and Arillastrum.
Myrtaceae or the myrtle family is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, and eucalyptus are some notable members of this group. All species are woody, contain essential oils, and have flower parts in multiples of four or five. The leaves are evergreen, alternate to mostly opposite, simple, and usually entire. The flowers have a base number of five petals, though in several genera the petals are minute or absent. The stamens are usually very conspicuous, brightly coloured and numerous.
Leptospermum is a genus of shrubs and small trees in the myrtle family Myrtaceae commonly known as tea trees, although this name is sometimes also used for some species of Melaleuca. Most species are endemic to Australia, with the greatest diversity in the south of the continent, but some are native to other parts of the world, including New Zealand and Southeast Asia. Leptospermums all have five conspicuous petals and five groups of stamens which alternate with the petals. There is a single style in the centre of the flower and the fruit is a woody capsule.
Metrosideros is a genus of approximately 60 trees, shrubs, and vines mostly found in the Pacific region in the family Myrtaceae. Most of the tree forms are small, but some are exceptionally large, the New Zealand species in particular. The name derives from the Ancient Greek metra or "heartwood" and sideron or "iron". Perhaps the best-known species are the pōhutukawa, northern and southern rātā of New Zealand, and ʻōhiʻa lehua, from the Hawaiian Islands.
Backhousia is a genus of thirteen currently known species of flowering plants in the family Myrtaceae. All the currently known species are endemic to Australia in the rainforests and seasonally dry forests of Queensland, New South Wales and Western Australia.
Lophostemon is a genus of 4 species of evergreen tree in the myrtle family Myrtaceae. All four species are native to Australia, with one extending to New Guinea. The genus was first described in 1830 but not widely recognized until the 1980s. All 4 species were previously included in the related genus Tristania.
Baeckea is a genus of flowering plants in the myrtle family, Myrtaceae, all but one endemic to Australia. Plants in the genus Baeckea are shrubs or small trees with leaves arranged in opposite pairs, white to deep pink flowers with five sepals and five petals, and five to fifteen stamens that are shorter than the petals.
Chamelaucium, also known as waxflower, is a genus of shrubs endemic to south western Western Australia. They belong to the myrtle family Myrtaceae and have flowers similar to those of the tea-trees (Leptospermum). The most well-known species is the Geraldton wax, Chamelaucium uncinatum, which is cultivated widely for its large attractive flowers.
Lenwebbia is a genus of shrubs or small trees in the myrtle family Myrtaceae. The genus is named to honour the Australian plant ecologist Dr. Leonard Webb. The genus occurs in mesic forests along or near the east coast of Australia, from northern New South Wales to northeastern Queensland.
Taxandria is a group of plants in the family Myrtaceae described as a genus in 2007. The entire genus is endemic to Western Australia, growing near the coast in the South West corner of the State.
Xanthostemon is a genus of trees and shrubs, constituting part of the myrtle plant family Myrtaceae. This genus was first described in 1857 by German–Australian botanist Ferdinand von Mueller. According to different official sources between 46 and 51 species are known to science. They grow naturally in New Caledonia, Australia, the Solomon Islands and Malesia, including the Philippines, New Guinea and Indonesia. The genera Pleurocalyptus and Purpureostemon from New Caledonia are morphologically close to Xanthostemon.
Thaleropia is a genus of flowering plants in the family Myrtaceae first described as a genus in 1993. It is native to Queensland and Papuasia.
Sannantha is a genus of flowering plants in the family Myrtaceae that are native to Australia and New Caledonia. Plants in the genus Sannantha are shrubs or trees with leaves arranged in opposite pairs, flowers usually arranged in small groups, the peduncles often 1.5–2 times as long as the pedicels and with seven to fourteen stamens. The fruit is a thin-walled capsule containing flattened, D-shaped seeds. Some species of Sannantha were previously included in the genus Babingtonia.
Ristantia is a group of plants in the family Myrtaceae described as a genus in 1982. The entire genus is endemic to the State of Queensland in Australia.
- Ristantia gouldiiPeter G. Wilson & B. Hyland - a tree species listed as vulnerable
- Ristantia pachysperma(F.Muell. & F.M.Bailey) Peter G.Wilson & J.T.Waterh.
- Ristantia waterhouseiPeter G.Wilson & B.Hyland
Kardomia is a genus of flowering plants in the family Myrtaceae. The genus was first formally described in 2007 and includes species previously included in Baeckea and Babingtonia. The entire genus is native to northeastern Australia
- Kardomia granitica(A.R.Bean) Peter G.Wilson
- Kardomia jucunda(S.T.Blake) Peter G.Wilson
- Kardomia odontocalyx(A.R.Bean) Peter G.Wilson
- Kardomia prominens(A.R.Bean) Peter G.Wilson
- Kardomia silvestris(A.R.Bean) Peter G.Wilson
- Kardomia squarrulosa(Domin) Peter G.Wilson
Barongia is a genus of flowering plants in the myrtle family, Myrtaceae first described as a genus in 1988. It contains only one known species, Barongia lophandra, endemic to the Cook region of Queensland, Australia.
Mitrantia is a genus of plant in family Myrtaceae described as a genus in 1988. It contains only one known species, Mitrantia bilocularis,endemic to the State of Queensland in northeastern Australia.
Sphaerantia is a group of flowering plants in the family Myrtaceae, described as a genus in 1988. The entire genus is endemic to the northern part of the State of Queensland in Australia.
- Sphaerantia chartaceaPeter G.Wilson & B.Hyland
- Sphaerantia discolorPeter G.Wilson & B.Hyland
Joy Thompson was an Australian botanist. Her main research areas were taxonomy and Myrtaceae.
Fergusonina, the sole genus in the family of Fergusoninidae, are gall-forming flies. There are about 40 species in the genus, all of them producing galls on Eucalyptus, Melaleuca, Corymbia, and Metrosideros species in Australia and New Zealand.
