===Habitat===
===Habitat===
”F. excorticata” is typically found in lowland and montane ecosystems, and is commonly found along streams and forest margins. It has a wide altitudinal range of {{convert|0-1050|m|abbr=on}} above sea level.{{Sfn|Godley|Berry|1995|p=37}} It can establish itself in most soil conditions, but generally prefers to grow in [[riparian]] soils and can also be utilised as a predecessor species for areas where conditions and soils are not the best.{{Sfn|Burrows|1995|p=3}}{{Sfn|Wardle|2011|p=99}} The soil contents in river-bed forests, where ”F. excorticata” commonly grows, can consist of a layer of [[humus]] beneath a layer of river-shingle.{{Sfn|Godley|Berry|1995|p=7}} ”F. excorticata” prefers shaded areas but can still grow well in sunny areas.{{Sfn|Burrows|1995|p=1}} The species is commonly found in mixed angiosperm-podocarp or beech (”Nothofagus”) forests, but is also common in other disturbed forests.{{Sfn|Burrows|1995|p=1}} Vegetation in these areas where ”F. excorticata” grows in can vary; for example, in plant communities that grow especially near rivers, ”F. excorticata” can be commonly associated with: [[Aristotelia serrata|wineberry]] (”Aristotelia serrata”), [[Melicytus ramiflorus|māhoe]] (”Melicytus ramiflorus”), and [[Veronica salicifolia|koromiko]] (”Veronica salicifolia”).{{Sfn|Cockayne|1921|pp=165–166}} ”F. excorticata” can also exhibit some [[Colonisation (biology)|colonial]] characteristics, especially after glacier retreatment and deforestation.{{Sfn|Godley|Berry|1995|p=7}}
”F. excorticata” is typically found in lowland and montane ecosystems, and is commonly found along streams and forest margins. It has a wide altitudinal range of {{convert|0-1050|m|abbr=on}} above sea level.{{Sfn|Godley|Berry|1995|p=37}} It can establish itself in most soil conditions, but generally prefers to grow in [[riparian]] soils and can also be utilised as a predecessor species for areas where conditions and soils are not the best.{{Sfn|Burrows|1995|p=3}}{{Sfn|Wardle|2011|p=99}} The soil contents in river-bed forests, where ”F. excorticata” commonly grows, can consist of a layer of [[humus]] beneath a layer of river-shingle.{{Sfn|Godley|Berry|1995|p=7}} ”F. excorticata” prefers shaded areas but can still grow well in sunny areas.{{Sfn|Burrows|1995|p=1}} The species is commonly found in mixed angiosperm-podocarp or beech (”Nothofagus”) forests, but is also common in other disturbed forests.{{Sfn|Burrows|1995|p=1}} Vegetation in these areas where ”F. excorticata” grows in can vary; for example, in plant communities that grow especially near rivers, ”F. excorticata” can be commonly associated with: [[Aristotelia serrata|wineberry]] (”Aristotelia serrata”), [[Melicytus ramiflorus|māhoe]] (”Melicytus ramiflorus”), and [[Veronica salicifolia|koromiko]] (”Veronica salicifolia”).{{Sfn|Cockayne|1921|pp=165–166}} ”F. excorticata” can also exhibit some [[Colonisation (biology)|colonial]] characteristics, especially after glacier retreatment and deforestation.{{Sfn|Godley|Berry|1995|p=7}}
<!–{{Sfn|Godley|Berry|1995|p=7}} also note there should be another ref for the riparian soils bitand [[Stewart Island]]sand [[Stewart Island]]s–>
<!–{{Sfn|Godley|Berry|1995|p=7}} also note there should be another ref for the riparian soils bitand [[Stewart Island]]sand [[Stewart Island]]s–>
Fuchsia excorticata, commonly known as the kōtukutuku and tree fuchsia, is a species of tree in the family Onagraceae that is endemic to New Zealand. A truly unusual tree, it is the largest Fuchsia species and is deciduous, an uncommon trait in New Zealand plants. It reaches 13 metres (40 feet) in height with a trunk up to 70 cm (28 in) in diameter. Its range mainly covers the North, South, and Stewart Islands, but found as far south as the Auckland Islands. It inhabits lowland to montane ecosystems, and is especially common near streams and forest margins. F. excorticata is noted for its bark, which naturally peels off into thin sheets of paper. Its scientific name, excorticata, reflects this distinctive property.
F. excorticata was first described by the German naturalists Johann Reinhold Forster and Georg Forster in 1775. F. excorticata is self-compatible, but its colourful flowers commonly attract bird pollinators. F. excorticata is one of New Zealand’s least flammable trees, which earned given the nickname “bucket-of-water” tree by early European settlers as it is very difficult to burn. F. excorticta is a culturally important tree to both indegenous Māori, it had multiple uses, but was mainly used as a source of food, the fruits are known as kōnini; they were also eaten by early European settlers. F. excorticata‘s 2023 assessment in the New Zealand Threat Classification System was “Not Threatened”.
Fuchsia excorticata (kōtukutuku) is a gynodioecious and deciduous species of tree in the family Onagraceae, reaching up to 13 metres (40 feet) in height with a twisted trunk, which is up to 70 cm (30 in) in diameter. It branches within several metres from the base, forming a spreading canopy. F. excorticata is the largest member of the genus Fuchsia; while most species grow as shrubs or small trees, this species has evolved in New Zealand to reach a much greater height. F. excorticata is noted for its shredding bark, which is a copper, orange, to reddish-brown in colour, and naturally peels off into thin sheets of paper, revealing the smooth pale green cambial layer in the inner bark. The leaves are up to 10 cm (4 in) long and 1.5–3 cm (0.6–1 in) wide. They are glabrous and slightly strigose in character and acute to rounded in shape. They are medium to dark green on the upperside and silver or white on the underside of the leaves.
Fuchsia excorticata is one of few deciduous trees in New Zealand. Throughout most of its range in the South Island and in the mountainous areas of the North Island, F. excorticata loses its leaves in autumn and reproduces them in spring, although some populations in the North Island retain them. A population of completely deciduous trees have been recorded as far north as Auckland. A 1936 study conducted in Dunedin revealed that leaf fall begins in early May and lasts for three to four weeks. F. excorticata remains leafless until new shoots start to appear in August or September.
Flowering occurs mostly from August to December; flowers grow individually but the tree can sometimes exhibit cauliflory, where they grow directly from stems or the main trunk. The ovaries are 4.5–8 mm long, 1.7–3 mm thick and green in colour. The sepals are narrow-triangular in character, 8 mm long, 3 mm wide at the base, and lustrous green in colour with dull purple streaks at the upper parts between the ridges, then changing to a red or crimson colour in the middle.
The petals are dark purple in colour and 1.8–5 mm long, 0.7–2.1 mm wide in the middle. The filaments are a purple to pale cream colour, 6–15 mm and 5–10 mm long, pollen-collecting anthers are also purple, 1.8–2.5 mm long and 1–1.7 mm thick. The styles are green to yellow in colour and 22–40 mm long. The stigmas are yellow to green in colour, 1.8–2.2 mm long and 1.4–2.1 mm wide. Fruits are a black to dark purple colour, ellipsoid to oblong in shape, 9–13 mm long and 5–8 mm thick. The seeds are a tan colour, 0.75–1 mm long and 0.3–0.6 mm broad, each fruit consists of about 320–670 seeds. F. excorticata has a gametic chromosome count of 11.
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F. excorticata exhibiting cauliflory
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The colourful flowers, produce unusual blue pollen
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F. excorticata‘s bark naturally peels off into thin flakes
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The edible fruits are purple to black in colour
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Berry et al. (2004) used cladistics to produce a phylogenetic tree of the genus Fuchsia, as such, F. excorticata‘s placement can be summarised in the represented cladogram. The South Pacific Fuchsia lineage diverged approximately thirty million years ago, supported by fossil evidence from Australia and New Zealand.
F. excorticata was first collected in October 1769 by the botanists Joseph Banks and Daniel Solander, on the first voyage of James Cook. It was collected in Anaura Bay near Gisborne. A specimen was also collected at
Queen Charlotte Sound / Tōtaranui. These localities were noted in their notes titled “Primitiae Florae Novae Zelandiae” (Beginnings of a Flora of New Zealand). The species was first described by the German naturalists Johann Reinhold Forster and Georg Forster in 1775, first recorded under the name Skinnera excorticata. In 1782, Carl Linnaeus the Younger placed the plant in the genus Fuchsia, which remains the species accepted scientific name and genus placement.
The etymology (word origin) of F. excorticata‘s genus, Fuchsia, is named in honour of the German physician and botanist Leonhart Fuchs. Its specific epithet (second part of the scientific name), excorticata, means ‘loose-barked’, and reflects the distinctive peeling property of the tree’s bark. The former genus name, Skinnera, was named after botanist Richard Skinner. The species is commonly known as kōtukutuku, tree fuchsia, and native fuchsia. The fruits are known in Māori as kōnini.
A self-incompatibile tree. It is pollinated by birds. The tree wētā (Hemideina) consume its seeds. F. excorticata has very low flammability rates.[18] A favoured food source for the common brushtail possums. F. excorticata plays host to the endemic insect, the huhu beetle (Oemona hirta).
F. excorticata is endemic to New Zealand. It is the most widely distributed Fuchsia species in the South Pacific. Its range mainly covers the North and South Islands, but can be found as far south as the Auckland Islands; where it has only been recorded in one locality in Laurie Harbour at Port Ross. In 1980, New Zealand botanist Colin Meurk, on an expedition to the Auckland Islands, said that he saw F. excorticata scattered along a small tributary at about 75 m (200 ft) in elevation on the south side of Grey Duck Creek 200 m (700 ft) away from the mouth of Laurie Harbour. It was commonly found in association with pikopiko (Asplenium bulbiferum) and tūpare (Macrolearia colensoi). F. excorticata on Stewart Island is uncommon, with its population being reduced by browsing mammals, however, the species was likely never a dominant tree species there, reportedly due to low soil fertility. There is also a naturalised population on the Chatham Islands, but it was introduced there by humans. Godley & Berry (1995) noted a person who visited the island in 1976 said that they were assured that “F. excorticata was introduced there about 90 years ago”. F. excorticata‘s 2023 assessment in the New Zealand Threat Classification System was “Not Threatened”.
F. excorticata is typically found in lowland and montane ecosystems, and is commonly found along streams and forest margins. It has a wide altitudinal range of 0–1,050 m (0–3,445 ft) above sea level. It can establish itself in most soil conditions, but generally prefers to grow in riparian soils and can also be utilised as a predecessor species for areas where conditions and soils are not the best. The soil contents in river-bed forests, where F. excorticata commonly grows, can consist of a layer of humus beneath a layer of river-shingle. F. excorticata prefers shaded areas but can still grow well in sunny areas. The species is commonly found in mixed angiosperm-podocarp or beech (Nothofagus) forests, but is also common in other disturbed forests. Vegetation in these areas where F. excorticata grows in can vary; for example, in plant communities that grow especially near rivers, F. excorticata can be commonly associated with: wineberry (Aristotelia serrata), māhoe (Melicytus ramiflorus), and koromiko (Veronica salicifolia). F. excorticata can also exhibit some colonial characteristics, especially after glacier retreatment and deforestation.
I whea koe i te ngahorotanga o te rau o te kōtukutuku
Where wert thou in the falling of the leaves of the kōtukutuku?
In Māori culture, F. excorticata‘s blooming flowers in September are a traditional indicator sign of the lunar calendar in the North Island, as a sign to plant early spring crops such as kūmara (sweet potato). The fruits, known as kōnini, are an important traditional food source and were often collected from trees by men. Other Māori language names for the plant include: kōhutuhutu, kōhutuku, and kōnini.
F. excorticata‘s purple-black fruit was eaten by Māori and European settlers in jams and puddings. The timber is very durable. It has been used for cabinetwork, inkstands, inlaying, ornamental turnery, and picture-frames.
Books
Journals
- Berry, Paul E.; Hahn, William J.; Sytsma, Kenneth J.; Hall, Jocelyn C.; Mast, Austin (2004). “Phylogenetic relationships and biogeography of Fuchsia (Onagraceae) based on noncoding nuclear and chloroplast DNA data”. American Journal of Botany. 91 (4): 601–614. doi:10.3732/ajb.91.4.601. ISSN 0002-9122.
- Burrows, C. J. (1995). “Germination behaviour of seeds of the New Zealand species Fuchsia excorticata, Griselinia littoralis, Macropiper excelsum, and Melicytus ramiflorus“. New Zealand Journal of Botany. 33 (1): 131–140. doi:10.1080/0028825X.1995.10412950. ISSN 0028-825X.
- Delph, L. F.; Lively, C. M. (1985). “Pollinator visits to floral colour phases of Fuchsia excorticata“. New Zealand Journal of Zoology. 12 (4): 599–603. doi:10.1080/03014223.1985.10428309. ISSN 0301-4223.
- Godley, Eric J.; Berry, Paul E. (1995). “The Biology and Systematics of Fuchsia in the South Pacific”. Annals of the Missouri Botanical Garden. 82 (4): 473. doi:10.2307/2399832.
- Lim, Ganges; Burns, K. C. (2024). “Conspicuous, green flowers are an honest signal of nectar rewards in a bird-pollinated tree (Fuchsia excorticata, Onagraceae)”. Plant Ecology. 225 (3): 227–233. doi:10.1007/s11258-023-01390-6. ISSN 1385-0237.
- McGlone, Matt S.; Dungan, Roger J.; Hall, Graeme M.J.; Allen, Robert B. (2004). “Winter leaf loss in the New Zealand woody flora”. New Zealand Journal of Botany. 42 (1): 1–19. doi:10.1080/0028825X.2004.9512887. ISSN 0028-825X.
- Perry, George L. W.; Wilmshurst, Janet M.; McGlone, Matt S. (2014). “Ecology and long-term history of fire in New Zealand”. New Zealand Journal of Ecology. 38 (2). New Zealand Ecological Society: 157–176. ISSN 0110-6465. JSTOR 24060795. Retrieved 11 November 2025.
- Robertson, Alastair W.; Ladley, Jenny J.; Kelly, Dave; McNutt, Kate L.; Peterson, Paul G.; Merrett, Merilyn F.; Karl, Brian J. (2008). “Assessing pollination and fruit dispersal in Fuchsia excorticata (Onagraceae)”. New Zealand Journal of Botany. 46 (3): 299–314. doi:10.1080/00288250809509768. ISSN 0028-825X. Retrieved 12 November 2025.
- Sopow, Stephanie L.; Bain, John (2017). “A checklist of New Zealand Cerambycidae (Insecta: Coleoptera), excluding Lamiinae”. New Zealand Entomologist. 40 (2): 55–71. Bibcode:2017NZEnt..40…55S. doi:10.1080/00779962.2017.1357423. ISSN 0077-9962. Retrieved 26 June 2025.
- Sweetapple, Peter; Nugent, Graham (1999). “Provenance Variation in Fuchsia (Fuchsia excorticata) in Relation to Palatability to Possums”. New Zealand Journal of Ecology. 23 (1). New Zealand Ecological Society: 1–10. ISSN 0110-6465. JSTOR 24054741. Retrieved 12 November 2025.
- Van Etten, Megan L.; Robertson, Alastair W.; Tate, Jennifer A. (2013). “Microsatellite markers for the New Zealand endemic tree Fuchsia excorticata (Onagraceae)”. Applications in Plant Sciences. 1 (10). Wiley. doi:10.3732/apps.1300045. ISSN 2168-0450.
- Wyman, Tarryn E.; Trewick, Steve A.; Morgan‐Richards, Mary; Noble, Alasdair D. L. (2011). “Mutualism or opportunism? Tree fuchsia (Fuchsia excorticata) and tree weta (Hemideina) interactions”. Austral Ecology. 36 (3): 261–268. doi:10.1111/j.1442-9993.2010.02146.x. ISSN 1442-9985.
- Wyse, Sarah V.; Perry, George L. W.; O’Connell, Dean M.; Holland, Phillip S.; Wright, Monique J.; Hosted, Catherine L.; Whitelock, Samuel L.; Geary, Ian J.; Maurin, Kévin J. L.; Curran, Timothy J. (2016). “A Quantitative Assessment of Shoot Flammability for 60 Tree and Shrub Species Supports Rankings Based on Expert Opinion”. International Journal of Wildland Fire. 25 (4): 466. doi:10.1071/WF15047. hdl:10182/6884. ISSN 1049-8001.
Miscellaneous
