Maple

The closest relative of Acer is Dipteronia, which only has two living species in China, but has a fossil record extending back to the middle Paleocene in North America. The oldest known fossils of Acer are from the late Paleocene of Northeast Asia and northern North America, around 60 million years old. The oldest fossils of Acer in Europe are from Svalbard, dating to the late Eocene (Priabonian ~38–34 million years ago).{{Cite journal |last1=Areces-Berazain |first1=Fabiola |last2=Hinsinger |first2=Damien D. |last3=Strijk |first3=Joeri S. |date=March 2021 |title=Genome-wide supermatrix analyses of maples (Acer, Sapindaceae) reveal recurring inter-continental migration, mass extinction, and rapid lineage divergence |journal=Genomics |language=en |volume=113 |issue=2 |pages=681–692 |doi=10.1016/j.ygeno.2021.01.014|pmid=33508445 |s2cid=231754169 |doi-access=free }}

File:Acer saccharum.jpg (sugar maple)]]

Most maples or acers are trees growing to a height of {{convert|10|-|45|m|abbr=on}}. Others are shrubs less than 10 meters tall with a number of small trunks originating at about ground level. Most species are deciduous, and many are renowned for their autumn leaf colours, but a few in southern Asia and the Mediterranean region are mostly evergreen. Most are shade-tolerant when young and are often riparian, understory, or pioneer species rather than climax overstory trees. There are a few exceptions such as sugar maple.{{clarify|date=February 2022|reason=It sounds like this is saying that sugar maple is not shade tolerant like other maples, but our sugar maple article says that the tree is "among the most shade tolerant of large deciduous trees", so what "exception" is being claimed in this sentence?}} Many of the root systems are typically dense and fibrous, inhibiting the growth of other vegetation underneath them. A few species, notably Acer cappadocicum, frequently produce root sprouts, which can develop into clonal colonies.

File:Vine Maple leaves and flowers.jpg (vine maple) leaves showing the palmate veining typical of most species]]

Maples are distinguished by opposite leaf arrangement. The leaves in most species are palmate veined and lobed, with 3 to 9 (rarely to 13) veins each leading to a lobe, one of which is central or apical. A small number of species differ in having palmate compound, pinnate compound, pinnate veined or unlobed leaves. Several species, including Acer griseum (paperbark maple), Acer mandshuricum (Manchurian maple), Acer maximowiczianum (Nikko maple) and Acer triflorum (three-flowered maple), have trifoliate leaves. One species, Acer negundo (box-elder or Manitoba maple), has pinnately compound leaves that may be simply trifoliate or may have five, seven, or rarely nine leaflets. A few, such as Acer laevigatum (Nepal maple) and Acer carpinifolium (hornbeam maple), have pinnately veined simple leaves.

Maple species, such as Acer rubrum, may be monoecious, dioecious or polygamodioecious. The flowers are regular, pentamerous, and borne in racemes, corymbs, or umbels. They have four or five sepals, four or five petals about 1–6 mm long (absent in some species), four to ten stamens about 6–10 mm long, and two pistils or a pistil with two styles. The ovary is superior and has two carpels, whose wings elongate the flowers, making it easy to tell which flowers are female. Maples flower in late winter or early spring, in most species with or just after the appearance of the leaves, but in some before the trees leaf out.Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan {{ISBN|0-333-47494-5}}.

Maple flowers are green, yellow, orange or red. Though individually small, the effect of an entire tree in flower can be striking in several species. Some maples are an early spring source of pollen and nectar for bees.

File:3D rendering of a µCT scan of a maple seed.ogv of a μCT scan of a samara. Resolution is about 45 μm/voxel.]]

The distinctive fruits are called samaras, "maple keys", "helicopters", "whirlybirds" or "polynoses". These seeds occur in distinctive pairs each containing one seed enclosed in a "nutlet" attached to a flattened wing of fibrous, papery tissue. They are shaped to spin as they fall and to carry the seeds a considerable distance on the wind. People often call them "helicopters" due to the way that they spin as they fall. During World War II, the US Army developed a special airdrop supply carrier that could carry up to {{convert|65|lb}} of supplies and was based on the maple seed.[https://books.google.com/books?id=gN8DAAAAMBAJ&dq=Popular+Mechanics+Science+installing+linoleum&pg=PA75 "Sky Hook Spirals from Plane"] Popular Mechanics, December 1944, p. 75. Seed maturation is usually in a few weeks to six months after flowering, with seed dispersal shortly after maturity. However, one tree can release hundreds of thousands of seeds at a time. Depending on the species, the seeds can be small and green to orange and big with thicker seed pods. The green seeds are released in pairs, sometimes with the stems still connected. The yellow seeds are released individually and almost always without the stems. Most species require stratification in order to germinate, and some seeds can remain dormant in the soil for several years before germinating.

The genus Acer, together with genus Dipteronia, were formerly often classified in a family of their own, the Aceraceae, but recent botanical consensus, including the Angiosperm Phylogeny Group system, includes them in the family Sapindaceae; their exclusion from Sapindaceae would leave that family paraphyletic. Within Sapindaceae, Acer is placed in the subfamily Hippocastanoideae. The genus is subdivided by its morphology into a multitude of sections and subsections.{{cite web|url=http://www.inh.co.jp/~hayasida/Ebunrui1.html|title=Classification of Genus Acer|date=12 August 2007|access-date=19 November 2017|url-status=dead|archive-url=https://web.archive.org/web/20070812014108/http://www.inh.co.jp/~hayasida/Ebunrui1.html|archive-date=12 August 2007}}{{Cite journal|last1=Areces-Berazain|first1=Fabiola|last2=Wang|first2=Yixi|last3=Hinsinger|first3=Damien D.|last4=Strijk|first4=Joeri S.|date=2020-07-13|title=Plastome comparative genomics in maples resolves the infrageneric backbone relationships|journal=PeerJ|language=en|volume=8|pages=e9483|doi=10.7717/peerj.9483|issn=2167-8359|pmc=7365138|pmid=32742784 |doi-access=free }} Molecular studies incorporating DNA sequence data from both chloroplast and nuclear genomes, aiming to resolve the internal relationships and reconstruct the evolutionairy history of the group, suggest a Late Paleocene origin for the group, appearing first in the northeastern Palearctic. Rapid lineage divergence was followed by several independent dispersals to the Nearctic and Western Palearctic regions.{{Cite journal|last1=Renner|first1=Susanne S|last2=Grimm|first2=Guido W|last3=Schneeweiss|first3=Gerald M|last4=Stuessy|first4=Tod F|last5=Ricklefs|first5=Robert E|date=2008-10-01|title=Rooting and Dating Maples (Acer) with an Uncorrelated-Rates Molecular Clock: Implications for North American/Asian Disjunctions|journal=Systematic Biology|volume=57|issue=5|pages=795–808|doi=10.1080/10635150802422282|pmid=18853365|issn=1063-5157|doi-access=free}}{{Cite journal|last1=Areces-Berazain|first1=Fabiola|last2=Hinsinger|first2=Damien D.|last3=Strijk|first3=Joeri S.|date=2021-03-01|title=Genome-wide supermatrix analyses of maples (Acer, Sapindaceae) reveal recurring inter-continental migration, mass extinction, and rapid lineage divergence|journal=Genomics|language=en|volume=113|issue=2|pages=681–692|doi=10.1016/j.ygeno.2021.01.014|pmid=33508445|issn=0888-7543|doi-access=free}} Fifty-four species of maples meet the International Union for Conservation of Nature criteria for being under threat of extinction in their native habitat.

File:RhytismaAcerinumDetailU.jpg fungus on Acer pseudoplatanus leaf]]

The leaves are used as a food plant for the larvae of a number of the order Lepidoptera (see List of Lepidoptera that feed on maples). In high concentrations, caterpillars, like the greenstriped mapleworm (Dryocampa rubicunda), can feed on the leaves so much that they cause temporary defoliation of host maple trees.{{Cite web|url=http://enpp.auburn.edu/outreach/web-publications/greenstriped-mapleworm/|title=Auburn University Entomology and Plant Pathology. Greenstriped Mapleworm|website=Auburn University Entomology and Plant Pathology|language=en|access-date=2017-11-14}} Aphids are also very common sap-feeders on maples. In horticultural applications a dimethoate spray will solve this.

Infestations of the Asian long-horned beetle (Anoplophora glabripennis) have resulted in the destruction of thousands of maples and other tree species in Illinois, Massachusetts, New Jersey, New York, and Ohio in the United States and Ontario, Canada.{{cite web|url=http://www.umassgreeninfo.org/fact_sheets/wood_attackers/asian_longhorned_beetle_MA.html#226|title=Fact Sheets|website=Umassgreeninfo.org|access-date=19 November 2017}}[http://www.region.york.on.ca/Publications/News/2003/September+18,+2003+Asian+Longhorned+Beetle+discovered+in+York+Region.htm September 18, 2003 Asian Longhorned Beetle discovered in York Region] {{webarchive|url=https://web.archive.org/web/20060114221329/http://www.region.york.on.ca/Publications/News/2003/September%2B18%2C%2B2003%2BAsian%2BLonghorned%2BBeetle%2Bdiscovered%2Bin%2BYork%2BRegion.htm |date=January 14, 2006 }}

Maples are affected by a number of fungal diseases. Several are susceptible to Verticillium wilt caused by Verticillium species, which can cause significant local mortality. Sooty bark disease, caused by Cryptostroma species, can kill trees that are under stress due to drought. Death of maples can rarely be caused by Phytophthora root rot and Ganoderma root decay. Maple leaves in late summer and autumn are commonly disfigured by "tar spot" caused by Rhytisma species and mildew caused by Uncinula species, though these diseases do not usually have an adverse effect on the trees' long-term health.Phillips, D. H. & Burdekin, D. A. (1992). Diseases of Forest and Ornamental Trees. Macmillan. {{ISBN|0-333-49493-8}}.

File:Canada flag halifax 9 -04.JPG

File:Sammatti.vaakuna.svg]]

A maple leaf appears on the coat of arms of Canada, and is on the Canadian flag. The maple is a common symbol of strength and endurance and has been chosen as the national tree of Canada. Maple leaves are traditionally an important part of Canadian Forces military regalia, for example, the military rank insignia for generals use maple leaf symbols.

There are 10 species naturally growing in the country, with at least one in each province. Although the idea of the tree as a national symbol originally hailed from the province of Quebec{{cite web|url=http://www.fraser.cc/FlagsCan/Nation/NatSym.html#r10|title=National Symbols|website=The Flag of Canada|date=1998|access-date=19 November 2017|first=Alistair B. |last=Fraser}} where the sugar maple is significant, today's arboreal emblem of Canada rather refers to a generic maple.{{cite web|url=http://canada.pch.gc.ca/eng/1444070816842/1444070816844|title=Official symbols of Canada - Canada.ca|first=Canadian|last=Heritage|website=Canada.pch.gc.ca|access-date=19 November 2017}} The design on the flag is an eleven-point stylization modeled after a sugar maple leaf (which normally bears 23 points).{{cite book |last1= Sandberg|first1=L. Anders |date= 2014|title=Urban Forests, Trees, and Greenspace: A Political Ecology Perspective|url=https://books.google.com/books?id=BRMWBAAAQBAJ&pg=PA182 |publisher=Routledge |isbn= 9781134687633}}

It is also in the name of the Canadian ice hockey team, the Toronto Maple Leafs.

The first attested use of the word was in 1260 as "mapole", and it also appears a century later in Geoffrey Chaucer's Canterbury Tales, spelled as "mapul".{{cite web|url=http://www.oed.com/view/Entry/113861|title=maple, n.1|publisher=Oxford University Press|access-date=19 November 2017|via=Oxford English Dictionary}} The maple is also a symbol of Hiroshima, ubiquitous in the local meibutsu.

A maple leaf, along with samaras, appears in the coat of arms of Sammatti, a former municipality of Uusimaa, Finland.{{cite book | title = Suomen kunnallisvaakunat | publisher = Suomen Kunnallisliitto | year = 1982 | page = 161 | isbn = 951-773-085-3 | language = fi}}{{cite web | title = Sisäasiainministeriön vahvistamat kaupunkien, kauppaloiden ja kuntien vaakunat 1949-1995 I:13 Sammatti | url = http://digi.narc.fi/digi/fullpic.ka?kuid=1637005 | publisher = Kansallisarkiston digitaaliarkisto | access-date = September 9, 2021 | language = fi}}

File:Maple between pines.jpg trees]]

File:Acer palmatum sango kaku.jpg (Japanese maple) has over 1,000 cultivars. This cultivar is A. palmatum 'Sango kaku', sometimes called "coralbark maple"]]

Some species of maple are extensively planted as ornamental trees by homeowners, businesses, and municipalities due to their fall colour, relatively fast growth, ease of transplanting, and lack of hard seeds that would pose a problem for mowing lawns. Particularly popular are Norway maple (although it is considered invasive in North America), silver maple, Japanese maple, and red maple. The vine maple is also occasionally used as an ornamental tree. Other maples, especially smaller or more unusual species, are popular as specimen trees.

Numerous maple cultivars that have been selected for particular characteristics can be propagated only by asexual reproduction such as cuttings, tissue culture, budding or grafting. Acer palmatum (Japanese maple) alone has over 1,000 cultivars, most selected in Japan, and many of them no longer propagated or not in cultivation in the Western world. Some delicate cultivars are usually grown in pots and rarely reach heights of more than 50–100 cm.

File:Japanese Maple 'Kiyohime'.jpg during fall abscission. This dwarf hybrid cultivar is prized for its small leaves and bright red fall colors.]]

File:Bonsai Federahorn.jpg

Maples are a popular choice for the art of bonsai. Japanese maple (Acer palmatum), trident maple (A. buergerianum), Amur maple (A. ginnala), field maple (A. campestre) and Montpellier maple (A. monspessulanum) are popular choices and respond well to techniques that encourage leaf reduction and ramification, but most species can be used.{{cite web | first=Mark | last=D'Cruz | title=Ma-Ke Bonsai Care Guide for Acer buergerianum | publisher=Ma-Ke Bonsai | url=http://makebonsai.com/guide/bonsailink.asp?quicklink=5030&name=Acer_buergerianum | access-date=2011-07-05 | archive-url=https://web.archive.org/web/20110714022834/http://www.makebonsai.com/guide/bonsailink.asp?quicklink=5030&name=Acer_buergerianum | archive-date=2011-07-14 | url-status=dead }}

File:Acer griseum3.jpg is widely grown for its decorative bark]]

Maple collections, sometimes called aceretums, occupy space in many gardens and arboreta around the world including the "five great W's" in England: Wakehurst Place Garden, Westonbirt Arboretum, Windsor Great Park, Winkworth Arboretum and Wisley Garden. In the United States, the aceretum at the Harvard-owned Arnold Arboretum in Boston is especially notable. In the number of species and cultivars, the Esveld Aceretum in Boskoop, Netherlands, is the largest in the world.

Maples are important as sources of syrup and wood. Dried wood is often used for the smoking of food. Charcoal from maples is an integral part of the Lincoln County Process used to make Tennessee whiskey.{{cite web|last=Zandona|first=Eric|title=Tennessee Whiskey Gets a Legal Definition|url=http://www.ezdrinking.com/ezdrinking/2013/9/14/tennessee-whiskey-gets-a-legal-definition|work=EZdrinking|access-date=2014-01-11}} They are also cultivated as ornamental plants and have benefits for tourism and agriculture.

File:curly maple bench.jpg

Some of the larger maple species have valuable timber, particularly Sugar maple in North America and Sycamore maple in Europe. Sugar maple wood—often known as "hard maple"—is the wood of choice for bowling pins, bowling alley lanes, pool and snooker cue shafts, and butcher's blocks. Maple wood is also used for the manufacture of wooden baseball bats, though less often than ash or hickory due to the tendency of maple bats to shatter if they do break. The maple bat was introduced to Major League Baseball (MLB) in 1998 by Sam Bat founder Sam Holman. Today it is the standard maple bat most in use by professional baseball.[http://www.hitrunscore.com/sam-bat-maple-baseball-bat-biography.html Sam Holman Maple Baseball Bats] {{webarchive|url=https://web.archive.org/web/20100516023403/http://www.hitrunscore.com/sam-bat-maple-baseball-bat-biography.html |date=2010-05-16 }} Maple is also commonly used in archery as the core material in the limbs of a recurve bow due to its stiffness and strength.{{citation needed|date = March 2025}}

Maple wood is often graded based on physical and aesthetic characteristics. The most common terminology includes the grading scale from common #2; which is unselected and often used for craft woods; common #1, used for commercial and residential buildings; clear; and select grade, which is sought for fine woodworking.{{cite web|url=http://www.ahec.org/hardwoods/pdfs/IllustratedGradingGuide.pdf|title=Publications|website=Ahec.org|access-date=19 November 2017}}

Some maple wood has a highly decorative wood grain, variously known as flame maple, quilt maple, birdseye maple and burl wood. This condition occurs randomly in individual trees of several species and often cannot be detected until the wood has been sawn, though it is sometimes visible in the standing tree as a rippled pattern in the bark.{{citation needed|date = March 2025}}

These select decorative wood pieces also have subcategories that further filter the aesthetic looks. Crotch wood, bees wing, cats paw, old growth and mottled are some terms used to describe the look of these decorative woods.[http://www.hobbithouseinc.com/personal/woodpics/_figure.htm Wood Terms and Examples] {{webarchive|url=https://web.archive.org/web/20100314144353/http://www.hobbithouseinc.com/personal/woodpics/_figure.htm |date=2010-03-14 }}

Maples have a long history of use for furniture production in the United States.{{cite book|author=Joseph Aronson|title=The encyclopedia of furniture|url=https://books.google.com/books?id=j3XWBk-qMV0C&pg=PT300|access-date=8 September 2010|year=1965|publisher=Random House, Inc.|isbn=978-0-517-03735-5|pages=300–}} The Cherokee people would produce a purple dye from maple bark, which they used to dye cloth.{{Citation |contribution=History of the Cherokees, 1830–1846 |title=Chronicles of Oklahoma |last1=Knight |first1=Oliver |publisher=Oklahoma Historical Society|place=Oklahoma City|year=1956–57|page=164|oclc=647927893 |language=en }}{{cite book |author-last=Foreman |author-first=Grant |title=The Five Civilized Tribes |publisher=University of Oklahoma Press |location=Norman |year=1934 |pages=283–284 |language=en |url=https://books.google.com/books?id=gGtLnSkqkekC&pg=PA283 |isbn=978-0-8061-0923-7 }}

Maple is considered a tonewood, or a wood that carries sound waves well, and is used in numerous musical instruments. Maple is harder and has a brighter sound than mahogany, which is another major tonewood used in instrument manufacturing.{{Cite web |url=http://www.fender.com/en-GB/news/index.php/?display_article=395 |title=Archived copy |access-date=2012-11-14 |archive-date=2021-03-02 |archive-url=https://web.archive.org/web/20210302174809/https://www.fender.com/en-GB/news/index.php/?display_article=395 |url-status=dead }}

The back, sides, and neck of most violins, violas, cellos, and double basses are made from maple.{{citation needed|date = March 2025}}

Electric guitar necks are commonly made from maple, having good dimensional stability. The necks of the Fender Stratocaster and Telecaster were originally an entirely maple one piece neck, but later were also available with rosewood fingerboards. Les Paul desired an all maple guitar, but due to the weight of maple, only the tops of Gibson's Les Paul guitars are made from carved maple, often using quilted or flamed maple tops. Due to its weight, very few solid body guitars are made entirely from maple, but many guitars have maple necks, tops or veneers.{{citation needed|date = March 2025}}

Maple is also often used to make bassoons and sometimes for other woodwind instruments like maple recorders.{{citation needed|date = March 2025}}

Many drums are made from maple. From the 1970s to the 1990s, maple drum kits were a vast majority of all drum kits made, but in recent years, birch has become popular for drums once again. Some of the best drum-building companies use maple extensively throughout their mid-pro range. Maple drums are favored for their bright resonant sound.{{cite book|author1=Geoff Nicholls|author2=Tony Bacon|title=The drum book|url=https://books.google.com/books?id=rWq1_qnZ0mAC&pg=PT54|access-date=19 October 2010|date=1 June 1997|publisher=Hal Leonard Corporation|isbn=978-0-87930-476-8|pages=54–}} Certain types of drum sticks are also made from maple.{{citation needed|date = March 2025}}

During late winter to early spring in northeastern North America, when the night-to-day temperatures change from freezing to thawing, maple trees may be tapped for sap to manufacture maple syrup.{{cite web|url=https://ppaq.ca/en/maple-production/step-by-step-production-maple-syrup/ |title=Step-by-Step in the Production of Maple Syrup |publisher=Québec Maple Syrup Producers |date=2021|access-date=4 October 2021}} The sap is sent via tubing to a sugar house where it is boiled to produce syrup or made into maple sugar or maple taffy. It takes about {{convert|40|L|USqt}} of sugar maple sap to make {{convert|1|L|USqt}} of syrup. While any Acer species may be tapped for syrup, many do not have sufficient quantities of sugar to be commercially useful, whereas sugar maples (A. saccharum) are most commonly used to produce maple syrup. Québec, Canada is a major producer of maple syrup, an industry worth about 500 million Canadian dollars annually.{{cite web|url=http://www.cbc.ca/news/canada/montreal/quebec-maple-syrup-production-increase-1.3990828|title=Quebec increases maple syrup production amid internal revolt, foreign competition|author=Marowits, Ross|publisher=CBC|date=20 February 2017|access-date=21 May 2017|url-status=live|archive-url=https://web.archive.org/web/20170518192634/http://www.cbc.ca/news/canada/montreal/quebec-maple-syrup-production-increase-1.3990828|archive-date=18 May 2017|df=dmy-all}}

Also, as these trees are a major source of pollen in early spring before many other plants have flowered, maple flowers are a source of foraging for honeybees that play a commercially important role in general agriculture and in natural habitats.{{cite web |title=Trees for bees and other pollinators |url=https://www.arborday.org/trees/health/pests/article-trees-for-bees.cfm |publisher=Arbor Day Foundation |access-date=5 October 2021 |date=2021}}

Maple is used as pulpwood. The fibers have relatively thick walls that prevent collapsing upon drying. This gives good bulk and opacity in paper. Maple also gives paper good printing properties.

Many maples have bright autumn foliage, and many countries have leaf-watching traditions. The sugar maple (Acer saccharum), whose leaves turn brilliant orange, is the primary contributor to fall "foliage season" in north-eastern North America. In Japan, the custom of viewing the changing colour of maples in the autumn is called momijigari. Nikkō and Kyoto are particularly favoured destinations for this activity. In Korea, the same viewing activity is called danpung-nori and the Seoraksan and Naejang-san mountains are among the best-known destinations.

File:台灣三角楓 Acer buergerianum var. formosanum 20220411100147 08.jpg|Acer buergerianum var. formosanum leaves and fruit

Image:Acer cappadocicum spring.jpg|Acer cappadocicum (Cappadocian maple)

Image:Acer carpinifolium.jpg|Acer carpinifolium leaves

Image:Acer ginnala.jpg|Acer ginnala foliage

Image:Bi-colored Maple Tree.jpg|Acer grandidentatum (bigtooth maple) in autumn colour

Image:Paperbark Maple Acer griseum Leaves Closeup 2856px.jpg|Acer griseum (paperbark maple)

Image:Acer laevigatum 3.jpg|Acer laevigatum leaves and fruit

Image:Acer macrophyllum 0304.jpg|Acer macrophyllum flowers and young leaves

File:青楓 Acer serrulatum 20210419095802 02.jpg|Acer oliverianum The Chinese name "Qingfeng" comes from the bark color of the new branches and young trunk which are green.

Image:TenryujiMomiji.jpg|Acer palmatum trees and bamboo in Japan

Image:Red maple leaf.jpg|Acer palmatum leaf in autumn

Image:Maple leaf Fcb981.JPG|Acer platanoides leaf

Image:Helicopter leaves.jpg|Acer platanoides (Norway maple) samaras

File:Acer rubrum 1-eheep (5097479399).jpg|Acer rubrum leaves

File:Red maple.png|Acer rubrum tree in autumn

Image:Acer sempervirens leaves.jpg|Acer sempervirens foliage

Image:Autumn Blaze Maple Foliage.jpg|Acer × freemanii 'Autumn Blaze' (a cross between A. rubrum and A. saccharinum

{{Commons category|Acer}}

• List of Acer species
• List of Award of Garden Merit maples
• List of Danish Acers
• Mazer – a drinking vessel made from maple wood
• List of foods made from maple

{{Reflist}}{{Cite book |title=Maples for gardens : a color encyclopedia |publisher=Timber Press |year=1999 |isbn=9780585254579}}

• {{cite book|last=Philips|first=Roger|title=Trees of North America and Europe|publisher=Random House, Inc.|location=New York|isbn=0-394-50259-0|year=1979|url-access=registration|url=https://archive.org/details/treesofnorthamer00phil}}

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Category:Plant dyes

Category:Taxa named by Carl Linnaeus