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, 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.
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.
Austromyrtus is a genus of shrubs in the myrtle family Myrtaceae. The genus was first described in 1893 by Franz Josef Niedenzu as a section of Myrtus, but in 1941 it was elevated to a genus by Max Burret.
Homoranthus is a genus of about thirty species of plants in the myrtle family Myrtaceae and all are endemic to Australia. Plants in this genus share similarities with those in both Darwinia and Verticordia. They are shrubs with their leaves arranged in opposite pairs and with flowers appearing either singly or in small groups, usually in upper leaf axils. They are found in Queensland, New South Wales and South Australia. The genus was first described in 1836. None of the species is common nor are they well-known in horticulture.
Diploglottis is a genus of 11 species in the lychee and maple family Sapindaceae. Most species only occur in the Wet Tropics bioregion of Queensland, but all species except one are endemic to eastern Australia, with the exception being D. diphyllostegia, which also occurs in New Guinea. They are commonly called tamarinds, for example northern tamarind, Babinda tamarind and Bernie's tamarind, however they are not closely related to the true tamarind from the family Fabaceae.
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.
Mischocarpus is a genus of about nineteen species of trees known to science, constituting part of the plant family Sapindaceae. They grow naturally from Australia and New Guinea, though Malesia as far north as the Philippines, through SE. Asia, Indo-China and S. China, to India at their farthest west. The eleven Australian species known to science grow naturally in the rainforests of the eastern coastal zone of New South Wales and Queensland, from Newcastle northwards through to north-eastern Queensland and Cape York Peninsula.
Gossia bidwillii, known as the python tree is a rainforest myrtle of eastern Australia. The usual habitat is the drier rainforest areas. The range of natural distribution is from the Hunter River in New South Wales to Coen in far northern Queensland.
Gossia is a genus of rainforest trees in the myrtle family first described as a genus in 2003 by Neil Snow, Gordon Guymer and Sawvel. It is native to northeastern Australia as well as several islands of Papuasia and New Caledonia.
Gossia acmenoides, known as the scrub ironwood, is a rainforest tree of the family Myrtaceae, native to eastern Australia. The usual habitat of this small tree is drier rainforest areas. The range of natural distribution is from Jamberoo in New South Wales to Eungella National Park in northern Queensland.
Uromyrtus lamingtonensis is a rare Australian shrub growing around the state border of New South Wales and Queensland. Like the Peach Myrtle, it has attractive pink flowers.
Gossia fragrantissima, the sweet myrtle or small-leaved myrtle, is a shrub or small tree of eastern Australia. A plant with a ROTAP rating of 3EC-, endangered by extinction. Found in sub tropical rainforests near streams, from near Woodburn, New South Wales to Nambour in south eastern Queensland. It features fragrant flowers, hence the specific epithet fragrantissima. White flowers grow from October to February.
Lithomyrtus obtusa, commonly known as beach myrtella, is a flowering plant species in the myrtle family, Myrtaceae. It occurs in coastal areas in New Guinea and Queensland, Australia.
Fontainea venosa, also commonly known as southern blushwood, veiny fontainea, Queensland fontainea and formerly named as Bahrs scrub fontainea is a rare rainforest shrub or tree of the family Euphorbiaceae. It is found in southeastern Queensland, Australia, extending from Boyne Valley to Cedar Creek and is considered vulnerable due to several contributing threats. The total population size is around 200 plants.
Gossia floribunda or Cape ironwood species of plant in the Myrtaceae family. It is a understorey plant growing to a height of 1 to 6 m. Found in Cape York Peninsula Australia and also in New Guinea. Small white flowers form in abundance.
Gossia pubiflora is a species of plant in the family Myrtaceae that is endemic to coastal central east Queensland. It is a shrub or small tree that grows to a height of 1 to 6 m tall.
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.
