Traditional uses and benefits of Box Elder

Item: Traditional uses and benefits of Box Elder
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Author: Sylvia

Box elder Quick Facts
Name:	Box elder
Scientific Name:	Acer negundo
Origin	Large parts of North America, from southern Canada through to Guatemala, including large parts of the USA and some parts of Mexico
Colors	Initially green in color but turn yellowish and then pale brown as they mature
Shapes	Distinctive v-shaped fruit that is 3-4 cm long and are borne in drooping clusters and each fruit consists of two one-seeded structures that are prominently winged
Health benefits	Support respiratory conditions, kidney infections, paralysis, swellings, vomiting and treat different maladies of the skin

Acer negundo, commonly known as box elder, boxelder maple, Manitoba maple or ash-leaved maple, is a species of maple belonging to Aceraceae (Maple family). The plant is native to large parts of North America, from southern Canada through to Guatemala, including large parts of the USA and some parts of Mexico. Six distinct varieties and/or sub-species of box elder (Acer negundo) have been identified in the wild in North America. It has been introduced to and naturalized throughout much of the world, including in South America, Australia, New Zealand, South Africa, much of Europe, and parts of Asia. Some of the popular common names of the plant include Manitoba maple, ash-leaf maple, cut-leaved maple, three-leaf maple, ash maple, sugar maple, negundo maple, river maple, Box elder, box elder maple, ash-leaved maple, maple ash, elf maple, black maple, three-leaved maple, California boxelder and Western box elder.

Genus name is the Latin name for a maple tree. Specific epithet comes from the Sanskrit and Bengali word nirgundi, which was used as negundo in the naming of Vitex negundo and later for this maple that has a leaf similar to that of Vitex negundo. The name box elder (sometimes boxelder) is in reference to a use of the wood for making crates and boxes and the supposed similarity of the leaves to those of elder (Sambucus). Leaves also resemble those of some ashes, hence the additional common name of ash-leaved maple. The names box elder and boxelder maple are based upon the similarity of its whitish wood to that of boxwood and the similarity of its pinnately compound leaves to those of some species of elder. The plant is occasionally considered a weedy or invasive species, and has been introduced to and naturalized throughout much of the world, including in South America, Australia, New Zealand, South Africa, much of Europe, and parts of Asia.

Box Elder Facts

Name	Box elder
Scientific Name	Acer negundo
Native	Native to large parts of North America, from southern Canada through to Guatemala, including large parts of the USA and some parts of Mexico.
Common Names	Manitoba maple, ash-leaf maple, cut-leaved maple, three-leaf maple, ash maple, sugar maple, negundo maple, river maple, Box elder, boxelder maple, ash-leaved maple, maple ash, elf maple, black maple, three-leaved maple, California boxelder, Western box elder
Name in Other Languages	Afrikaans: Essenblaarahorn, Kaliforniese esdoring, Veer-ahorn Albanian: Panjë Arabic: Qiqib manituba (قيقب مانيتوبا) Armenian: T’khki artsat’ap’ayl (Թխկի արծաթափայլ) Azerbaijani: Qarışıq meşələrin torpaqları Basque: Lizar-astigar, negundo astigar Belarusian: Klion amierykanski (клён амерыканскі) Bulgarian: Yasenolisten yavor (ясенолистен явор) Canada: Aulne-buis, box-elder maple, érable, érable à feuilles composes, érable à feuilles de frêne, érable à Giguère, érable à Giguère pubescent, érable argilière, érable du Manitoba, érable negundo, inland box-elder, inland Manitoba maple, plaine à giguère Catalan: Negundo, Auró americà Chinese: Fu ye feng (复叶枫 ), Cén yè qī (梣叶槭) Croatian: Javor negundovac, negundovac Czech: Javor jasanolistý, Javor jaseňolistý Danish: Askebladet løn, Dutch: Noorse Esdoorn, Vederesdoorn English: Ashleaf maple, Ash leaf maple, Ash-leaved maple, Box elder, Manitoba maple, Three-leaved maple, California boxelder, Boxelder maple, Three-leaf maple, Western boxelder Esperanto: Manitoba acero Estonian: Saarvaher, saarvaher Finnish: Saarnivaahtera French: Érable à feuilles de frêne, Érable négundo, Négondo, Érable à Giguère, Aulne-buis, Plaine à Giguère, Érable argilièr, Érable négondo, Érable à feuilles composes, Érable à feuilles de Frêne, érable de Malabar German: Eschen-Ahorn, Eschenblättriger Ahorn, Eschen-Ahorn, Greek: Sféndamos (Σφένδαμος), Sfentani, Sfontamni Hebrew: אדר מילני Eder meilani, אדר מילני Hungarian: Körislevelü’juhar , Zöld juhar Icelandic: Askhlynur Iran: Afraie-zinati Irish: Trom bosca Italian: Acero Americano, acero a foglie di frassino, acero negundo, Japanese: Tonerikoba-no-kaede (トネリコバノカエデ) Korean: Negundo danpung (네군도단풍) Latvian: Oslapu klava Lithuanian: Uosialapis klevas Netherlands: Vederesdoorn Norwegian: Asklønn Persian: افرای برگ‌خاکستر Polish: Klon jesionolistny, jesioklon Portuguese: Ácer, Ácer-negundo, Bordo-negundo, Negundo, pau-ferro Romanian: Arţar American Russian: Klen amerikanskij (Kлен американский), Klen iasenelistnyj (Kлен ясенелистный) Serbian: Pajavac (Пајавац), negundo (негундо) Slovak: Javor jaseňolistý Slovenian: Javor jesenovec, Amerikanski javor Spanish: Acecintle, Arce negundo, arce, fresno de Guajuco, arce Americano, arce de hojas de fresno, arce negundo Swedish: Asklönn Tatar: Тилгән өрәңгесе Turkish: Dişbudak yapraklı akçaağaç, isfendan Ukrainian: Amerykansʹkyy klen (Американський клен), klen yasenolystyy (клен ясенолистий) Upper Sorbian: Šědźiwy klon USA: Inland boxelder, Manitoba maple, western boxelder Welsh: Masarnen Dail Ynn
Plant Growth Habit	Suckering, short lived, fast-growing, weak-wooded, medium-sized, deciduous tree
Growing Climates	Riparian habitats, forests, woodland, wet forests, along roadsides, moist soil, interior valleys, coastal mountains, floodplain forests, open disturbed woodlands, thickets, river banks, streams, ponds or seasonally flooded flats, fence rows, shallow ditches
Soil	Able to tolerate a wide variety of soils but shows a strong preference for rich moist well-drained soils. Although boxelder will grow on soils from gravel to clay, it grows best on deep, sandy loam, loam, or clay loam soils
Plant Size	Grows up to 10–25 m (35–80 ft.) tall, with a trunk diameter of 30–50 cm (12–20 in), rarely up to 1 m (3.3 ft.) diameter
Root	Usually develops a shallow, fibrous root system. On deep soils it may form a short taproot with strong laterals
Shoot	Green, often with a whitish to pink or violet waxy coating when young
Bark	Bark is smooth and green when young, become pale gray to light brown and separating into long thin ridges with shallow grooves with age
Branches	Smooth, somewhat brittle, and tend to retain a fresh green color rather than forming a bark of dead, protective tissue
Twigs	Twigs are stout, light green to purplish or brownish with a polished look or are often covered with a whitish bloom that is easily rubbed off
Leaf	Relatively large leaves about 15-38 cm long are oppositely arranged along the stems and are made up of 3-9 leaflets (i.e. they are pinnate). The leaflets are roughly oval or elongated in shape (i.e. ovate, elliptic or lanceolate) with margins that are irregularly or regularly toothed (i.e. crenate or serrate) and may, or may not, also be shallowly lobed
Flowering season	April to May
Flower	Separate male and female (i.e. unisexual) flowers are usually borne on separate plants (i.e. this species is dioecious). The male flowers are borne on very slender drooping stalks (i.e. pedicels) 2-7 cm long and usually has five prominent stamens. The female flowers are borne on shorter and thicker stalks (up to 4 cm long).
Fruit Shape & Size	Distinctive v-shaped fruit that is 3-4 cm long and are borne in drooping clusters and each fruit consists of two one-seeded structures that are prominently winged
Fruit Color	Initially green in color but turn yellowish and then pale brown as they mature
Plant Parts Used	Inner bark, sap
Propagation	By seed
Lifespan	75 – 100 years
Season	September to October
Precautions	Ingestion of sufficient quantities of box elder seeds or other parts of the plant results in breakdown of respiratory, postural, and cardiac muscles.

Plant Description

Box elder is a suckering, short lived, fast-growing, weak-wooded, medium-sized, deciduous tree that normally grows up to 10–25 m (35–80 ft.) tall, with a trunk diameter of 30–50 cm (12–20 in), rarely up to 1 m (3.3 ft.) diameter. The plant is found growing in riparian habitats, forests, woodland, wet forests, along roadsides, moist soil, interior valleys, coastal mountains, floodplain forests, open disturbed woodlands, thickets, river banks, streams, ponds or seasonally flooded flats, fence rows, shallow ditches, areas near bridges, urban waste areas, swamps, fresh mesic, deciduous forests, mesic to dry conifer forests oak savannas, chaparral and different kinds of prairie and grasslands. The plant is able to tolerate a wide variety of soils but shows a strong preference for rich moist well-drained soils. Although box elder will grow on soils from gravel to clay, it grows best on deep, sandy loam, loam, or clay loam soils with a medium to rocky texture. Plants often become chlorotic on very alkaline soils.

The plant usually develops a shallow, fibrous root system. On deep soils it may form a short taproot with strong laterals. Shoot are green, often with a whitish to pink or violet waxy coating when young. Twigs are stout, light green to purplish or brownish with a polished look or are often covered with a whitish bloom that is easily rubbed off. Bark is smooth and green when young, become pale gray to light brown and separating into long thin ridges with shallow grooves with age.

Stems

Mature trunks have brownish-grey coloured bark that is rough and shallowly fissured. The younger branches are relatively smooth, hairless (i.e. glabrous) and somewhat shiny when they are young, but the developing bark becomes flaky in appearance on older branches. The youngest branches are rounded and green or purplish in color. They are often initially covered in a whitish waxy or powdery coating that gives them a slightly bluish-green appearance (i.e. they are somewhat pruinose or glaucous). Dormant growing buds (2-5 mm long) are present at the tips of the stems during winter, and these usually have one or two pairs of scales that are covered in tiny whitish-coloured hairs.

Leaves

The relatively large leaves about 15-38 cm long are oppositely arranged along the stems and are made up of 3-9 leaflets (i.e. they are pinnate). These leaves are borne on a stalk (i.e. petiole) 5-12 cm long and each leaflet has its own smaller stalk (i.e. petiolule). The leaflets are roughly oval or elongated in shape (i.e. ovate, elliptic or lanceolate) with margins that are irregularly or regularly toothed (i.e. crenate or serrate) and may, or may not, also be shallowly lobed. The side (i.e. lateral) leaflets are 4-12 cm long and 2-4.5 cm wide, while the end (i.e. terminal) leaflet is usually significantly larger in size (up to 15 cm long and 8 cm wide) with a longer stalk (i.e. petiolule). These leaflets are usually entirely bright green in color, although sometimes they may have whitish-coloured blotches or margins (i.e. they may be variegated). Leaflets change color as they age and eventually turn dull yellow or brownish before being shed during autumn and winter. The undersides of the leaflets are paler in color, have prominent veins, and sometimes have a scattered covering of hairs that are more prominent along the veins.

Leaf arrangement	Opposite/sub opposite
Leaf type	Odd-pinnately compound; made up of 3-5 leaflets, occasionally 7-9
Leaf margin	Serrate, lobed
Leaf shape	Ovate, lanceolate
Leaf venation	Reticulate, pinnate
Leaf type and persistence	Deciduous
Leaf blade length	Leaflets 2 to 4 inches
Leaf color	Green on top, paler green underneath
Fall color	Yellow, orange
Fall characteristic	Showy

Flowers

Flowers appear just before, or with, the first leaves each spring, and are borne in the leaf forks (i.e. axils). Separate male and female (i.e. unisexual) flowers are usually borne on separate plants (i.e. this species is dioecious). Male and female flowers are both green and yellowish-green in color and lack any petals. They both have five tiny green sepals (about 1 mm long) and are arranged in drooping clusters (i.e. racemes) 2-15 cm long. The male flowers are borne on very slender drooping stalks (i.e. pedicels) 2-7 cm long and usually has five prominent stamens. The female flowers are borne on shorter and thicker stalks (up to 4 cm long). Flowering occurs during spring (i.e. from September to November).

Flower color	Yellow green
Flower characteristics	Not showy; emerges in clusters on racemes
Flowering	Early spring, prior to new leaves

Fruit

Fertile flowers are followed by distinctive v-shaped fruit that is 3-4 cm long and are borne in drooping clusters and each fruit consists of two one-seeded structures that are prominently winged (i.e. a special type of mericarp called a samara). They are joined together near the base to form a ‘double samara’. The seed compartment at the base of these structures is somewhat oval (i.e. ellipsoid) in shape and about 15 mm long, while the wings are prominently veined. Immature fruit are green in color but turn yellowish and then pale brown as they mature. Mature fruit tend to remain on the female trees throughout summer and autumn, and even into the winter. The paired samaras usually eventually separate after they are shed. The seeds themselves are strongly wrinkled.

Fruit shape	Elongated 2-winged samara
Fruit length	1-1 1/2 inch
Fruit covering	Dry or hard
Fruit color	Brownish-tan
Fruit characteristics	Attracts squirrels/mammals; showy; fruit/leaves a litter problem