Scientific NameAcer negundo
Other Common Names:
Synonyms (former Scientific Names):
The leaves are opposite, 13-20 cm long, pinnatelycompound with 3(-5 or more) leaflets 5-10 cm long and 3-6 cm wide, long-pointed, coarsely toothed andoften shallowly lobed.
Maple Family (Aceraceae): Boxelder is a native tree growing to 20 m tall, with broad rounded crown, usually developing a shallow, fibrous root system; bark light gray-brown with shallow fissures, becoming deeply furrowed; twigs slender, shiny green, usually glabrous but sometimes hairy. Flowering: March-May (with or just before the leaves), fruiting: August-October. The flowers are wind pollinated but also visited by bees.
Flower Seed Head
The flowers are yellow-green, about 5 mm long, the male (staminate) flowers fascicled, the female (pistillate) flowers in drooping racemes; most trees are either male or female (species is essentially dioecious), but bisexual flowers occur on a few trees (technically polygamo-dioecious).
Fruits are winged nutlets (samaras) in a pair, 2.5-4 cm long, clustered on long stalks.
the eastern half of the US, with naturalized western outlyers
woody bush or tree
Thorns or Spines
shorter than leaf
Stem Cross Section
round or oval