- Magnolia acuminata
-
Cucumber tree Magnolia acuminata
Morton Arboretum acc. 1046-3*1Scientific classification Kingdom: Plantae (unranked): Angiosperms (unranked): Magnoliids Order: Magnoliales Family: Magnoliaceae Genus: Magnolia Subgenus: Binomial name Magnolia acuminata
L.Magnolia acuminata, commonly called the cucumber tree (often spelled as a single word "cucumbertree"), cucumber magnolia or blue magnolia, is one of the largest magnolias, and one of the cold-hardiest. It is a large forest tree of the Eastern United States and Southern Ontario Canada. It is a tree that tends to occur singly as scattered specimens, rather than in groves.[1]
The cucumber tree is native primarily within the Appalachian belt, including the Allegheny Plateau and Cumberland Plateau, up to western Pennsylvania and New York. There are also numerous disconnected outlying populations through much of the southeastern U.S., and a few small populations in Southern Ontario. In Canada, the cucumber tree is listed as an endangered species and is protected under the Canadian Species at Risk Act.[2]
The leaves are deciduous simple and alternate, oval to oblong, 12-25 cm long and 6-12 cm wide, with smooth margins and downy on the underside. They come in two forms, acuminate at both ends, or moderately cordate at the base (these are usually only formed high in the tree).
Unlike most magnolias, the flowers are not showy. They are typically small, yellow-green, and borne high in the tree in April through June. The name Cucumber tree comes from the unripe fruit, which is green and often shaped like a small cucumber; the fruit matures to a dark red color and is 6-8 cm long and 4 cm broad, with the individual carpels splitting open to release the bright red seeds, 10-60 per fruit. The ripe fruit is a striking reddish orange color.
Uses and cultivation
Cucumber trees are excellent shade trees for parks and gardens, though they are not recommended for use as street trees. In cultivation, they typically only grow 15-20 m (50-75 feet) tall, although they reach over 30 m (100 feet) in ideal forest situations. They can become quite massive: the United States national champion in Stark County, Ohio measures more than seven feet (2 m) in diameter (although only 79 ft or 24 m tall). They grow best in deep, moist, well-drained soils that are slightly acidic although they are tolerant of alkaline soils.
They are tricky to transplant due to their coarse, fleshy root system and should be planted shallow and moved in early spring with a good soil ball.
In the timber trade, this tree is interchangeable with that of the related tuliptree (Liriodendron tulipifera).
Magnolia acuminata has been used in hybridizing new varieties that share its yellow flower color and cold hardiness
References
- ^ Sternberg, G., & Wilson, J. (2004). Native Trees for North American Landscapes. Portland, Oregon:Timber Press
- ^ White, D.J. (2000). Update COSEWIC Status Report on the Cucumber Tree Magnolia acuminata in Canada. Committee on the Satus of Endangered Wildlife in Canada. Ottawa, Ontario
External links
Categories:- Magnolia
- Trees of Appalachia U.S.
- Trees of humid continental climate
- Trees of Ontario
- Trees of Indiana
- Trees of New York
- Trees of Ohio
- Trees of Pennsylvania
- Trees of West Virginia
- Trees of Illinois
- Trees of Missouri
- Trees of Michigan
- Trees of Oklahoma
- Trees of Alabama
- Trees of Arkansas
- Trees of Florida
- Trees of Georgia (U.S. state)
- Trees of Kentucky
- Trees of Louisiana
- Trees of Maryland
- Trees of Mississippi
- Trees of North Carolina
- Trees of South Carolina
- Trees of Tennessee
- Trees of Virginia
- Plants described in 1759
Wikimedia Foundation. 2010.