Sharpened maple
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Tailed maple ( Acer caudatum ) in the subsp. ukurunduense |
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| Acer caudatum | ||||||||||||
| Wall. |
The tailed maple ( Acer caudatum ) is a kind of the genus of maples . It occurs in the east of Asia.
description
The tailed maple grows as a deciduous tree that can reach heights of up to 10 meters. The strong branches have a bark that has elliptical to rectangular lenticels .
The winter buds are oval shaped. The 5-fold, more rarely 7-fold lobed, wide leaves are 8 to 12 centimeters wide and stand on a 5 to 9 centimeter long, red-colored petiole. The lobes are ovate to triangular-ovate and tapered or pointed at the tip. The leaf margin is double or sharply serrated. The upper side of the leaf is dark green and the underside of the leaf is light green. Yellowish hairs are found on the underside of the leaf, while the upper side of the leaf is hairless with the exception of the veins . The leaf surface is membranous.
The tailed maple is Andromonöz . The flowering period includes the month of May and the fruits ripen in September. The red inflorescences are panicle-shaped and stand on 8 to 12 centimeters long stems. The 5 to 8-millimeter long, slender flower stalks have five-fold flowers. The elongated petals are around 7 millimeters long. Eight hairless stamens are formed. The ovary has dense, yellow-colored hairs. A yellowish-brown wing fruit develops from the flower, 2.5 to 2.8 centimeters long and 7 to 9 millimeters thick . The seed itself is flat ovoid.
The number of chromosomes is 2n = 26.
Distribution and location
The natural range of the tailed maple includes Russia, the Korean peninsula , the two Japanese islands of Hokkaidō and Honshū , China, Bhutan , the north Indian state of Sikkim , Myanmar and Nepal . In Russia, the distribution area includes the Amur Oblast , the Khabarovsk and Primorye regions as well as the Kuriles and Sakhalin . In China, the species occurs in south-east Gansu , Heilongjiang , west Henan , north-west Hubei , Jilin , Liaoning , south Shaanxi , north and west Sichuan , Xizang and north-west Yunnan .
The species grows mainly in mountain forests at altitudes of 1700 to 4000 meters.
Systematics
The tailed maple is within the genus of maple ( Acer the) section Parviflora and serial caudata assigned. It was first described in 1831 by Nathaniel Wallich in Plantae Asiaticae Rariorum , Volume 2. A synonym for the species is, among others, Acer papilio King .
Subspecies
The species is divided into three subspecies:
- Acer caudatum subsp. caudatum , the species type
- Acer caudatum subsp. multiserratum (Maxim.) AEMurray occurs in China. A synonym is Acer multiserratum Maximowicz .
- Acer caudatum subsp. ukurundense (Trautv. & CAMey.) E. Murray occurs in Russia, Japan and the Korea Peninsula as well as in the Chinese provinces of Heilongjiang, Jilin and Liaoning.
swell
- Acer caudatum. In: Flora of China. www.efloras.org, accessed January 8, 2011 (English).
Individual evidence
- ↑ a b c d e f Acer caudatum. In: Flora of China. www.efloras.org, accessed January 8, 2011 (English).
- ↑ a b c d Acer caudatum. In: Germplasm Resources Information Network. www.ars-grin.gov, accessed on January 8, 2011 (English).
- ↑ a b Acer caudatum. In: The Plant List. www.theplantlist.org, accessed January 8, 2011 .