Flora of Kermadec Islands

Metrosideros kermadecensis, commonly known as the Kermadec pōhutukawa, is a species of tree in the family Myrtaceae. It is endemic to the Kermadec Islands of New Zealand. It reaches a height of up to 20 metres (70 feet), with its main trunk reaching 3 m (10 ft) in diameter. The species is classified in the subgenus Metrosideros. M. kermadecensis was first described by the British botanist Joseph Dalton Hooker in 1864, and was described as Metrosideros polymorpha. It was given its current binomial name in 1928 by the New Zealand botanist Walter Oliver. Metrosideros kermadecensis has been

Coprosma acutifolia, is a shrub that is native to New Zealand, found only on Raoul Island. C. acutifolia can grow up to 12 metres tall in wet or dry forest, becoming a sub-canopy tree at lower altitudes and a canopy species along ridgelines. Tree up to c. 10 m. tall; branches ascending; branchlets slender, glab. Lvs on slender petioles 5–7 mm. long. Stipules membr., sheathing, sub-acute; denticle prominent. Lamina membr., glab., ovate to ovate-elliptic to lanceolate, acuminate, tapering to petiole; ± 60-(75) × 20- (35) mm.; margins ± waved. Reticulated veins fine, evident. ♂ 3–9 on slender

Veronica breviracemosa, synonym Hebe breviracemosa, is a plant in the hebe group of the family Plantaginaceae native to Raoul Island of New Zealand's Kermadec Islands, where it is found in coastal cliffs and headlands.

Myrsine kermadecensis, commonly known as the Kermadec matipo, Kermadec myrsine, or the Kermadec mapou, is a species of flowering plant in the family Primulaceae, endemic to the Kermadec Islands of New Zealand. It was named by Thomas Cheeseman in 1888, and first described in 1892.

Homalanthus polyandrus is a species of plant in the family Euphorbiaceae. It is endemic to New Zealand.

Alsophila kermadecensis, synonym Cyathea kermadecensis, is a species of tree fern endemic to Raoul Island in the Kermadec Islands, where it is locally common in damp, and sometimes drier, forest and scrub. The trunk of this plant is erect, slender (to about 4.5 inches (eleven centimeters) diameter) and up to 20 m (65 feet) tall. It has a massive basal swelling, composed mostly of adventitious roots, which can be up to 13 feet (four meters) high and 6.5 feet (two meters) thick. The trunk is often covered with scars of old stipe-bases. Fronds are tripinnate and up to 4 m in length. The rachis

Rhopalostylis baueri is a species of palm native to Norfolk Island (Australia) and to the Kermadec Islands (New Zealand). Norfolk Island is the type locality. The common names on Norfolk Island are 'Norfolk Island palm' or 'niau'. In New Zealand the name 'Kermadec nikau' is used to refer to the Kermadec Islands population.

Cyperus ustulatus, also known as giant umbrella-sedge or coastal cutty grass is a species of sedge native to New Zealand. C. ustulatus generally grows in coastal or lowland areas near water in the North Island and on the Kermadec Islands. The leaves are wide, shiny and folded. It produces long, dark brown seed heads after flowering in summer. The seed heads are held by a cluster of leaves at the top of the plant. The Māori name for the plant is toetoe upoko-tangata. The word toetoe by itself generally refers to Austroderia which are in Poaceae, a different family. Alongside cattails (Typha

Pittosporum crassifolium, karo, stiffleaf cheesewood, kaikaro or kihiki is a relatively fast-growing large shrub or small tree with an erect, fastigiate growth habit. It is endemic to New Zealand. This species is self-supporting with a simple form that can grow up to 10 m tall. Pittosporum crassifolium is part of the wider Pittosporaceae family, which has over 160 species in the southern hemisphere.

Scaevola gracilis is a plant in the family Goodeniaceae, native to the Kermadec Islands and Tonga. It was first described in 1856 by Joseph Dalton Hooker. In 1998, William Russell Sykes united the Tongan Scaevola porrecta with the Kermadec Islands S. gracilis. The specific epithet, gracilis, is a Latin adjective meaning "slender".

Myoporum rapense is a plant in the figwort family, Scrophulariaceae and is endemic to French Polynesia and the Kermadec Islands. It is closely related to Myoporum laetum and there are two subspecies which are found on different island groups.

Pouzolzia australis, synonyms including Boehmeria australis and Boehmeria calophleba, is a species of large shrub or small tree in the plant family Urticaceae. It is endemic to small islands belonging to Australia and New Zealand – Norfolk Island, Lord Howe Island, and the Kermadec Islands. The population on Norfolk island, sometimes treated as a distinct subspecies, is critically endangered. In the Kermadec Islands, it was described in 2018 as "threatened – nationally endangered".

Ascarina lucida, commonly known as hutu, is a species of shrub or small tree in the family Chloranthaceae. It is endemic to New Zealand; its range mostly covers the western coast of the South Island. It is also found in the North Island, but is uncommon there. It inhabits lowland and montane forests, and grows in various soil types. It reaches a height of up to 8 metres (30 feet) and the glossy leaves have tipped teeth on their margins. A. lucida was first described by the British botanist Joseph Dalton Hooker in 1856. It is the only member of the family Chloranthaceae that is native to New

Neopanax is a genus of flowering plants in the family Araliaceae, native to New Zealand, including the Kermadec Islands. It is a clade within the genus Pseudopanax, and some authorities consider it to be a synonym of Pseudopanax.

Melicope ternata, commonly known as wharangi, is a coastal shrub or small tree in the family Rutaceae that is native to New Zealand. Melicope ternata has glossy, green, trifoliate foliage and can grow into a tree 6 metres tall. It is found in coastal areas in the main islands of New Zealand and the North, South, Three Kings and Kermadec islands.

Euchiton collinus, the creeping cudweed, is a herb native to Australia and New Zealand. It has become naturalized in a few places in the United States (California, Oregon). Euchiton collinus is a biennial or perennial herb up to 40 cm (15.5 in) tall, spreading by means of stolons and rhizomes. Leaves form a basal rosette surrounding the base of the stem and also individually higher up the stem. The plant produces a flower heads in a hemispheric cluster 1–2 cm (0.5–1 in) across. Each head has 40-60 pistillate flowers around the edge of the head plus 3-5 bisexual florets toward the center.

Melicytus ramiflorus, commonly known as hinahina, māhoe and whitey wood, is a species of small tree of the family Violaceae. It is endemic to New Zealand. It grows up to 10 metres high with a trunk up to 60 cm in diameter, it has smooth, light bark and brittle twigs. The dark-green "alternate" leaves are 5–15 cm long and 3–5 cm wide and their edges are finely serrated (although this feature is less pronounced in younger plants). The plants are dioecious and the small flowers are yellowish in colouration, between 3 and 4 mm in diameter and occur in fascicles, growing straight out from naked

Corynocarpus laevigatus, commonly known as karaka or the New Zealand laurel, is a medium-sized evergreen tree in the family Corynocarpaceae. It is endemic to New Zealand and is common throughout the North Island and less common in the South Island. C. laevigatus individuals are also found on the Chatham Islands, Kermadec Islands, and the Three Kings Islands. C. laevigatus is mostly a coastal tree, although in the North Island, it is also found inland. Corynocarpus laevigatus was first described in 1776 by the German naturalists Georg and Johann Reinhold Forster. C. laevigatus grows to heights

Coriaria arborea is a highly poisonous and common native shrub or small tree of New Zealand. The common name for the plant is tree tutu, and it is one of the New Zealand species of Coriaria known by the name tutu. Coriaria arborea is found in scrub and open areas from the coast to the hills across the country. A straggling plant, it can grow to 20 feet (6.1 m) high. The leaves grow opposite on slender stems while flowers are arranged in drooping racemes. C. arborea is capable of nitrogen fixation.

Disphyma australe is a species of flowering plant in the family Aizoaceae and is endemic to New Zealand. It is a prostrate, succulent annual shrub or short-lived perennial plant with stems up to 2 m (6 ft 7 in) long, leaves that are three-sided in cross-section with a rounded lower angle, and white to deep pink daisy-like flowers that are 2–4 cm (0.79–1.57 in) in diameter with 3–5 rows of petals and multiple stamens. Disphyma australe is a coastal plant and therefore can be found at cliff faces, gravel beaches, salt meadows and estuaries.

Pyrrosia eleagnifolia, commonly known as the leather-leaf fern, or ota in Māori, is a climbing fern endemic to New Zealand. P. eleagnifolia has thick, fleshy rounded leaves, and grows both on the ground and as an epiphyte.

Poa cita, commonly known as the silver tussock, or wī, which is also a Māori name, or by the Māori name pātītī, is a grass of the family Poaceae that is endemic to New Zealand. Poa cita was described and named by Elizabeth Edgar in 1986, having previously being named Poa caespitosa. It is found throughout most of New Zealand, from the Kermadec Islands to Stewart Island / Rakiura and out to the Chatham Islands, but not known from Raglan to Manawatū in the west of the North Island, except on Mount Taranaki. It grows to 0.3–1.0 metres tall, and sometimes hangs as much as 2 metres long down steep

Parablechnum novae-zelandiae, synonym Blechnum novae-zelandiae, commonly known as palm-leaf fern or kiokio, is a species of fern found in New Zealand. It can often be found growing in clay soil on embankments and roadsides. P. novae-zelandiae has long fronds that grow up to 2 metres long by 50 cm wide. They are pink when new and as they age they turn green and darken. Kiokio is edible. Its steamed leaves were relied on by Māori travellers in bush regions.

Acianthus sinclairii, commonly known as pixie cap or heart-leaf orchid, is a flowering plant in the orchid family Orchidaceae and is endemic to New Zealand. It is a terrestrial herb with a single, heart-shaped leaf and up to ten translucent green flowers, usually tinged maroon.

Sonchus kirkii, also known as New Zealand sow thistle, or shore puha is a herb in the Asteraceae family. It grows in coastal New Zealand.

Juncus edgariae is a species of rush, commonly called Edgar's rush or wīwī, that is endemic to New Zealand. The species was described in 2001 by Lawrie Johnson and Karen Wilson. It had previously been confused with Juncus gregiflorus, which is now considered endemic to Australia. The species name edgariae is in honour of New Zealand botanist Elizabeth Edgar. Juncus edgariae is the most abundant rush species in New Zealand, and is widespread throughout, including the Kermadec and Chatham Islands. Found commonly from between the coast to the hills, it is usually located in open shrubland,

Hydrocotyle moschata, also known as hairy pennywort or musky-marsh pennywort, is a species of water pennywort. Hairy pennywort is native to New Zealand, but has been introduced and naturalized elsewhere including California and Mozambique.

Adiantum cunninghamii is a maidenhair fern found in New Zealand. The sori are found under the curved leaf margins.

Ceodes brunoniana (synonym Pisonia brunoniana) is a species of flowering tree in the family Nyctaginaceae that is native to northern New Zealand, Australia's Lord Howe Island, and the Hawaiian Islands. The common names in New Zealand are parapara or birdcatcher tree.

Lepidium oleraceum is a herb in the family Brassicaceae, endemic to New Zealand. Its English common name is Cook's scurvy grass; Māori names include nau, ngau, naunau and heketara. Its specific epithet oleraceum means "vegetable/herbal" in Latin and is a form of holeraceus (oleraceus).