In angiosperms, a hypanthium or floral cup is a structure where basal portions of the calyx, the corolla, and the stamens form a cup-shaped tube. It is sometimes called a floral tube, a term that is also used for corolla tube and calyx tube. It often contains the nectaries of the plant. It is present in many plant families, although varies in structural dimensions and appearance. This differentiation between the hypanthium in particular species is useful for identification. Some geometric forms are obconic shapes as in toyon, whereas some are saucer-shaped as in Mitella caulescens.
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.
Angophora is a genus of nine species of trees and shrubs in the myrtle family, Myrtaceae. Endemic to eastern Australia, they differ from other eucalypts in having juvenile and adult leaves arranged in opposite pairs, sepals reduced to projections on the edge of the floral cup, four or five overlapping, more or less round petals, and a papery or thin, woody, often strongly ribbed capsule. Species are found between the Atherton Tableland in Queensland and south through New South Wales to eastern Victoria, Australia.
Alectryon is a genus of about 30 species of trees and shrubs from the family Sapindaceae. They grow naturally across Australasia, Papuasia, Melanesia, western Polynesia, east Malesia and Southeast Asia, including across mainland Australia, especially diverse in eastern Queensland and New South Wales, the Torres Strait Islands, New Guinea, the Solomon Islands, New Caledonia, New Zealand, Vanuatu, Fiji, Samoa, Hawaii, Indonesia and the Philippines. They grow in a wide variety of natural habitats, from rainforests, gallery forests and coastal forests to arid savannas and heaths.
Macrozamia is a genus of around forty species of cycads, family Zamiaceae, all of which are endemic to Australia. Many parts of the plant have been utilised for food and material, most of which is toxic if not processed correctly.
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.
Dysoxylum is a flowering plant genus of trees and shrubs from the mahogany family, Meliaceae.
Cupaniopsis is a genus of about 67 species of trees and shrubs of the soapberry family, Sapindaceae. They grow naturally in New Guinea, New Caledonia, Australia, Torres Strait Islands, Fiji, Samoa, Sulawesi, Micronesia. Many species have been threatened with extinction globally or nationally, with official recognition by the International Union for Conservation of Nature (IUCN) and several national and state governments.
Austromyrtus is a genus of shrubs in the myrtle family Myrtaceae. Three species are found along the east coast of Australia; in Queensland and in New South Wales and A. lotoides being endemic to New Caledonia. The fruits of A. dulcis have a hint of cinnamon flavouring. The species under this generic name in New Caledonia are being taxonomically revised and will be transferred to another genus.
Diploglottis is a genus of 10 species of trees known to science, constituting part of the plant family Sapindaceae. They grow naturally in rainforests and margins of adjoining humid forests in eastern Australia and New Guinea. Some species are known as native tamarind or small-leaved tamarind; they have no direct relationship with the true tamarind.
Triunia is a genus of medium to tall shrubs or small trees found as understorey plants in rainforests of eastern Australia. Members of the plant family Proteaceae, they are notable for their poisonous fleshy fruits or drupes. Only one species, T. youngiana, is commonly seen in cultivation.
Romnalda is a genus of monocotyledonous plants in the family Asparagaceae, subfamily Lomandroideae. As of December 2013 four formally named species are known and accepted by botanical science.
The greater Brisbane area of Queensland Australia, has many species of indigenous flora. This article links the flora to its geography with:
Rhodomyrtus is a group of shrubs and trees in the family Myrtaceae described as a genus in 1841. The genus is native to southern China, the Indian Subcontinent, Southeast Asia, Melanesia, and Australia.
Melaleuca williamsii is a plant in the myrtle family, Myrtaceae and is endemic to an area between north-eastern New South Wales and south eastern Queensland in Australia. It is a distinctive shrub with stiff branches, silvery new growth, prickly leaves and spikes of purple flowers in late spring. It is classified as a vulnerable species under the Australian Government Endangered Species Protection Act.
Gossia is a genus of rainforest trees in the myrtle family first described as a genus in 2003. It is native to northeastern Australia as well as several islands of Papuasia and New Caledonia.
Rhodamnia is a group of rainforest trees and shrubs in the myrtle family described as a genus in 1822. They are native to southern China, Southeast Asia, Papuasia, Australia, and New Caledonia.
Myrteae is the largest tribe in the plant family Myrtaceae. It includes most of the species of the family that have fleshy fruits.
Gossia gonoclada, known as the square-stemmed or angle-stemmed myrtle for the distinctive four raised corners on the angled branchlets, is a rainforest tree of the family Myrtaceae, native to south-east Queensland, Australia. It is an endangered species.
