Haumia-tiketike is the god of all uncultivated vegetative food in Māori mythology. He is particularly associated with the starchy rhizome of the Pteridium esculentum, which became a major element of the Māori diet in former times. He contrasts with Rongo, the god of kūmara and all cultivated food plants.
Metrosideros is a genus of approximately 60 trees, shrubs, and vines in the family Myrtaceae, mostly found in the Pacific region. 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.
Beilschmiedia tarairi, commonly called taraire, is a tree of the family Lauraceae, endemic to the North Island of New Zealand. It is a common canopy tree in lowland forests north of Auckland, often growing in association with kauri, pōhutukawa, tawāpou, and pūriri on basalt rocks and soils. Beilschmiedia is a genus of about 40 mainly tropical trees and shrubs with alternate to opposite leaves.
Metrosideros kermadecensis, with common names Kermadec pōhutukawa and New Zealand Christmas bush is an evergreen tree of the myrtle family which is endemic to the volcanic Kermadec Islands about 900 km (560 mi) north-east of New Zealand. The tree produces a brilliant display of red flowers, made up of a mass of stamens and is the dominant forest tree on Raoul Island, growing to 15 m or more. The trunk is up to 1 m or more in diameter. It is very similar to, and often confused with, the pōhutukawa of mainland New Zealand, differing mainly by having smaller, more oval leaves, and by flowering throughout the year. It also resembles the ʻōhiʻa lehua of Hawaii.
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 member of the diverse Metrosideros genus, which are widespread over the southwest Pacific. It is the state tree of Hawai‘i.
Metrosideros bartlettii, commonly known as the Bartlett's rātā, is a rare tree endemic to only a few parts of the Northland Region in New Zealand's North Island. It is one of twelve Metrosideros species in the family Myrtaceae. Bartlett's rātā was first discovered in 1975 by New Zealand botanist and schoolteacher, John Bartlett. There are only three known patches of dense native forest near Piwhane / Spirits Bay that contain Bartlett's rātā: Radar Bush, Kohuronaki Bush, and Unuwhao Bush. Bartlett's rātā has a high chance of becoming extinct unless immediate conservation measures are taken, due to its ongoing decline. A 2021 study in the New Zealand Journal of Botany reported only 13 adult trees that are known to exist in the wild. Despite its rarity in the wild, Bartlett's rātā is common in cultivation, with it being found in several private and botanic gardens throughout New Zealand. Its current conservation status was assessed by the IUCN Red List in 2013 as "Critically Endangered" and its population trend was assessed as "Decreasing".
Metrosideros robusta, the northern rātā, is a forest tree endemic to New Zealand. It grows up to 25 metres (82 ft) or taller, and usually begins its life as a hemiepiphyte high in the branches of a mature forest tree; over centuries the young tree sends descending and girdling roots down and around the trunk of its host, eventually forming a massive, frequently hollow pseudotrunk composed of fused roots. In disturbed ground, or where there are gaps in the forest cover, northern rātā will grow on the ground with a normal but short trunk.
Metrosideros umbellata, the southern rātā, is a tree endemic to New Zealand. It grows up to 15 metres (49 ft) or more tall with a trunk up to 1 metre or more in diameter. It produces masses of red flowers in summer. Unlike its relative, northern rātā, this species rarely grows as an epiphyte.
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 carminea is a forest liane or vine that is endemic to New Zealand. It occurs in coastal and lowland forest from Te Paki in the north of the North Island south to Māhia Peninsula and Taranaki. It is one of a number of New Zealand Metrosideros species which live out their lives as vines, unlike the northern rātā (M.robusta), which generally begins as a hemi-epiphyte and grows into a huge tree.
Elingamita is a genus in the plant family Primulaceae. It consists of a single species, Elingamita johnsonii, a tree or shrub endemic to the Three Kings Islands approximately 55 km north of the North Island of New Zealand. The entire world natural population of the tree is confined to a small rocky island and two nearby islets, and thus is vulnerable to destruction by fire or other unforeseen events. Elingamita johnsonii grows as a shrub or small tree in pōhutukawa forest and coastal scrub on West island. It also occurs on two rocky islets of the Princes Group; on one of these islets, Hinemoa Rock, it grows as an emergent canopy tree in exposed places. The relationship of Elingamita to other genera of the Primulaceae remains to be properly established. Discovered in 1950, Elingamita johnsonii takes its name from the steamer Elingamite, which was wrecked on West Island in 1902. The natural range is currently free of rodents, but the fruit is known to be very palatable to rats.
Metrosideros perforata, also known as white rata, climbing rata, akatea or Akatorotoro, is one of twelve Metrosideros species endemic to New Zealand. It is one of three white flowering rātā vines.
Project Crimson is a conservation initiative to promote the protection of the pōhutukawa and the rātā which are under threat due to browsing by the introduced common brushtail possum. The vision of the project is to "enable pōhutukawa and rātā to flourish again in their natural habitat as icons in the hearts and minds of all New Zealanders."
Some species endemic to New Zealand are causing problems in other countries, similar to the way introduced species in New Zealand cause problems for agriculture and indigenous biodiversity.
Metrosideros colensoi, the climbing rata or Colenso's rātā, is a forest liane or vine that is endemic to New Zealand. 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 before growing into a huge tree. It grows to around 6 metres in height and bears clusters of pink or white flowers. It is unusual amongst New Zealand's metrosideros species in that its branches display a weeping habit, forming a 'hanging curtain' appearance. This behaviour is uncommon in New Zealand native plants. The name commemorates William Colenso, an early Cornish Christian missionary who was one of the great characters of New Zealand botany.
Metrosideros diffusa, the white rātā, climbing rātā or in Māori akakura, is a forest liane or vine endemic to New Zealand. 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. It is one of three white flowering rātā vines. White rātā is the most common climbing rātā in the wild, found naturally in lowland forests throughout the North, South and Stewart islands.
Metrosideros parkinsonii, also known as Parkinson's rātā or shrubby rata, is a shrub or small tree endemic to New Zealand. The name commemorates Sydney Parkinson, Captain James Cook's botanical artist during his first voyage to New Zealand.
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.
Frullania wairua, the spirit liverwort or radar bush liverwort, is a species of liverwort in the order Porellales. It is one of 24 species in the large genus Frullania that are native to New Zealand. The species was first described by Matt von Konrat and John E. Braggins in 2005 in the New Zealand Journal of Botany.
