Metrosideros excelsa, with common names pohutukawa, New Zealand Christmas tree, New Zealand Christmas bush, and iron tree, is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of red flowers made up of a mass of stamens. The pohutukawa is one of twelve Metrosideros species endemic to New Zealand. Renowned for its vibrant colour and its ability to survive even perched on rocky, precarious cliffs, it has found an important place in New Zealand culture for its strength and beauty, and is regarded as a chiefly tree by Māori. The blossom of the tree is called kahika.
Myrtaceae or the myrtle family is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pohutukawa, 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.
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 rātā, and southern rātā of New Zealand, and ʻōhiʻa lehua,, from the Hawaiian Islands.
Callistemon is a genus of shrubs in the family Myrtaceae, first described as a genus in 1814. The entire genus is endemic to Australia but widely cultivated in many other regions and naturalised in scattered locations. Their status as a separate taxon is in doubt, some authorities accepting that the difference between callistemons and melaleucas is not sufficient for them to be grouped in a separate genus.
Angophora costata, commonly known as Sydney red gum or smooth-barked apple, is a species of medium-sized to tall tree that is endemic to eastern Australia. It has smooth bark, lance-shaped leaves arranged in opposite pairs, flower buds usually in groups of three, white or creamy white flowers and ribbed, oval or bell-shaped fruit.
Metrosideros polymorpha, the ʻōhiʻa lehua, is a species of flowering evergreen tree in the myrtle family, Myrtaceae, that is endemic to the six largest islands of Hawaiʻi. It is a highly variable tree, being 20–25 m (66–82 ft) tall in favorable situations, and a much smaller prostrate shrub when growing in boggy soils or directly on basalt. It produces a brilliant display of flowers, made up of a mass of stamens, which can range from fiery red to yellow. Many native Hawaiian traditions refer to the tree and the forests it forms as sacred to Pele, the volcano goddess, and to Laka, the goddess of hula. ʻŌhiʻa trees grow easily on lava, and are usually the first plants to grow on new lava flows.
Metrosideros bartlettii, also known as Bartlett's rātā, Cape Reinga white rātā or in Māori as rātā moehau, is one of twelve Metrosideros species endemic to New Zealand and is notable for its extreme rarity and its white flowers, somewhat uncommon in that genus of red-flowered trees and plants. Its natural range is in the far north of the North Island at Te Paki, in three patches of dense native forest near Spirits Bay that escaped destruction by fire, namely Radar Bush, Kohuronaki Bush, and Unuwhao Bush. Only 13 adult trees are known to exist in the wild and most of these are either ill or dying. The lack of fossil evidence elsewhere suggests that the tree may always have been restricted to the North Cape area, which was an island until it was connected to the mainland by the sandspit that constitutes Ninety Mile Beach.
Metrosideros fulgens is a forest liana or vine endemic to New Zealand. It occurs in coastal and lowland forest throughout the North Island, on the west coast of the South Island and on the Three Kings Islands north of Cape Reinga. It is one of a number of New Zealand Metrosideros species which live out their lives as vines, unlike the northern rata (M.robusta), which generally begins as a hemi-epiphyte and grows into a huge tree. Scarlet rātā is one of the better-known species of rātā vines, because it flowers in autumn or winter, and is often highly visible on well-lit host trees along forest roads, with vibrant displays of large red flowers that rise above the forest canopy.
Metrosideros ochrantha is a species of plant in the family Myrtaceae.
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.
Melaleuca viminalis, commonly known as weeping bottlebrush, or creek bottlebrush is a plant in the myrtle family, Myrtaceae and is endemic to New South Wales, Queensland and Western Australia. It is a multi-trunked, large shrub or tree with hard bark, often pendulous foliage and large numbers of bright red bottlebrush flowers in spring and summer. It is possibly the most commonly cultivated melaleuca in gardens and its cultivars are often grown in many countries.
Angophora floribunda, commonly known as the rough-barked apple, is a common woodland and forest tree of the family Myrtaceae native to Eastern Australia. Reaching 30 m (100 ft) high, it is a large tree with fibrous bark and cream-white flowers that appear over the Austral summer. It grows on alluvial soils on floodplains and along watercourses. Much of the land it grew on has been cleared for agriculture.
Metrosideros stipularis is a species of the myrtle family commonly known as tepú, trepú, or tepual. It is an evergreen tree or shrub that can attain a height of about seven metres. The plant is native to southern South America in the southern portions of Chile and Argentina and is a typical resident of very wet areas, especially peat bogs. Tepú has white flowers that emerge during the austral summer from January through March. The tree's wood is used within its range as a firewood due to it high energy content. This species has often been placed in its own genus Tepualia, but recent works include it in Metrosideros.
Metrosideros operculata is a species of flowering plant in the family Myrtaceae. It is endemic to New Caledonia. It usually grows as a shrub to 3 metres in height, or rarely as a small tree to 10 metres. Stems are square in section and covered with silky hairs. The stiff, pointed leaves have a slightly revolute margin and are linear to elliptic in shape. They are 12 to 40 mm long and 3 to 10 mm wide. White, pink or red flowers with 3 petals and between 50 and 120 stamens are produced in axillary inflorescences.
Melaleuca pallida, commonly known as lemon bottlebrush, is a plant in the myrtle family, Myrtaceae and is endemic to eastern Australia. It is an upright shrub with thin, spreading branches, silvery new growth and pale yellow, sometimes pinkish bottlebrush flowers.
Metrosideros albiflora, also known as large white rātā, Northland white rātā, akatea or simply white rātā, is a forest liane or vine endemic to New Zealand. It is one of three white flowering rātā vines. The name "albiflora" indeed literally means white flowered. Despite the similar names, large white rātā is distinguished by its much larger leaves and flowers. Its flowers are amongst the largest of any rātā, similar in size to both scarlet rātā and pōhutukawa. It occurs almost exclusively in Kauri forests from the northern Kaimai Ranges to Te Paki at the top of the North Island.
Metrosideros boninensis is a species of flowering plant in the family Myrtaceae. It is endemic to the Bonin Islands archipelago and is found exclusively on Chichijima Island, excepting for two remaining trees located on neighboring Anijima Island. M. boninensis is classified as ‘endangered’ in the Japanese Red Data Book and, although there were 326 plants recorded in 2004, genetic diversity of M. boninensis is extremely low.
Metrosideros leunigii is the oldest described fossil species of the flowering plant genus Metrosideros, named from fossil flowers and fruits uncovered from the Oligocene aged Little Rapid River deposit in Tasmania, Australia, as well as leaves from this deposit and identical leaves from the Eocene aged Hasties deposit, also in Tasmania. These fossils are significant, because they show that Metrosideros once occurred naturally in Australia during the Cenozoic, and has since become extinct.
Syzygium elegans is a shrub belonging to the Myrtaceae family. It is found on the island of New Caledonia and grows to a height of 1 to 2 m. Syzygium elegans is found on or beside creeks and streams. Leaves are linear or oblanceolate, 2.5 to 4 cm long and about 0.3 to 0.6 cm in width. Flowers are white, they have 4 sepals and 4 petals. Which is then followed by a white or red fruit, which contains one seed.
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.
