Striped maple
| Striped maple | ||||||||||||
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Striped maple ( Acer pensylvanicum ) |
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| Acer pensylvanicum | ||||||||||||
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The strip maple ( Acer pensylvanicum ) is a plant from the genus of maple ( Acer ) within the family of the soap tree plants (Sapindaceae). Other common German names are Pennsylvanian maple, snake skin maple and American striped maple.
description
Appearance and leaf
The striped maple grows as a small tree or large shrub and reaches heights of 6 to 9 meters. It grows slowly and probably reaches 100 years. Standing alone, it has a broad crown. The very conspicuous, greenish-brown bark has fine white stripes.
The opposite arranged leaves are divided into a petiole and a leaf blade. The leaf blade is about 15 centimeters long, three-lobed and only turns yellow in autumn.
Generative characteristics
The striped maple can be monoecious ( monoecious ), i.e. with male and female flowers on one specimen, or dioecious ( dioecious ), i.e. with male and female flowers on different specimens. This can differ from year to year on the same specimen.
The first flowers are formed on 11-year-old specimens that are only 1 meter tall. The flowering time is in May and June and begins after the leaves are almost completely developed. The flowers are arranged in hanging, 10 to 15 centimeters long, racemose inflorescences . The yellow flowers are mostly pseudo-twittering and have a diameter of about 6 millimeters. The functionally male flowers usually have a rudimentary stamp. The functionally female flowers develop stamens, but the pollen sacs do not open. Some flowers have been found that contain both sexes fully developed.
The fruit stalk is 10 to 15 millimeters long. The fissure fruits consist of two wing nuts (samaras). The wing nuts are initially reddish and later turn tan. The nuts and wings are together around 20 millimeters long.
Chromosome number
The number of chromosomes is 2n = 26.
Occurrence
The striped maple originally comes from North America, from southeastern Canada to the northeastern USA .
In natural locations it thrives best on shady, cool northern slopes of highland valleys in small open spots in forests or as undergrowth in mixed forests of hardwood species. It often grows on well- drained sandy loam soils . This hardy wood prefers shady locations. In sunny locations it needs more moist soil .
Systematics
The first publication of Acer pensylvanicum was by Carl von Linné . Acer pensylvanicum belongs to the Macrantha section in the genus Acer .
use
The striped maple is used as an ornamental plant.
literature
- William J. Gabriel, Russell S. Walters: Acer pensylvanicum , In: RM Burns, BH Honkala (Eds.): Silvics of North America , US Department of Agriculture, 1990. Online.
Individual evidence
- ↑ Acer pensylvanicum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
Web links
- Milo Coladonato, 1993: Data sheet from the Fire Effects Information System = FEIS of the USDA Forest Service .
- USDA data sheet.