Asian yellow wood

Asian yellow wood
	Asiatic yellowwood ( Maackia amurensis )
Systematics
Order :	Fabales (Fabales)
Family :	Legumes (Fabaceae)
Subfamily :	Butterflies (Faboideae)
Tribe :	Sophoreae
Genre :	Maackia
Type :	Asian yellow wood
Scientific name
	Maackia amurensis
	Rupr. & Maxim.

The Asiatic yellowwood ( Maackia amurensis ) is a plant species from the genus Maackia within the legume family (Fabaceae). The species comes from East Asia and is used as an ornamental plant because of its decorative inflorescences .

description

bark

Pinnate leaves and inflorescence

Vegetative characteristics

The Asian yellowwood is a sparingly branched, deciduous tree that reaches heights of 10 to 15 meters and a diameter of 60 centimeters at chest height . The bark is green-brown and scaly. The purple-brown bark of young twigs, covered with cork pores , is hairy, while older twigs have bare bark. The buds are bare.

The 15 to 23 centimeters long leaves are divided into a petiole and a leaf blade. The petiole is 3 to 6 millimeters long. The leaf blade is pinnate unpaired with seven to eleven pinnate leaves . The leafless leaflets are 3.5 to 7, rarely up to 9.7 centimeters and a width of 2 to 3.5, rarely up to 5 centimeters elliptical to oblong-egg-shaped with a rounded base and a short pointed upper end.

Generative characteristics

The flowering period extends from July to August. The 10 to 20 centimeters long, upright racemose inflorescences are grouped in panicle-like total inflorescences . The main axis of the inflorescences is hairy densely brown. The flower stalks are usually 4 to 6 (3.2 to 10) millimeters long.

The hermaphroditic flowers are 8 to 12 millimeters in length zygomorphic and five-fold with a double flower envelope . The calyx is bell-shaped, 2 to 4 millimeters in size, with short teeth and dense yellow-brown hairs. The crown is white and 7 to 11 millimeters in size. The only carpel is straight and dense yellow-brown hairs. The legumes , 3 to 7 centimeters long and 1 to 1.2 centimeters wide, contain one to four seeds.

The yellow-brown to brown seeds are elliptical with a length of 6 to 8 millimeters. The fruits ripen from September to October.

Chromosome number

The number of chromosomes is 2n = 18.

Distribution and location requirements

The species is distributed over Russia (mainly Amur area ), China , Taiwan and the Korean Peninsula to the Japanese islands .

The Asian yellowwood grows as steppe wood and in dry forests on hills at altitudes of 300 to 900 meters. It prefers moderately dry to fresh, nutrient-rich, slightly acidic to alkaline, sandy loamy to loamy soils. The Asian yellowwood thrives in sunny locations and loves warmth but is usually frost hardy .

Systematics

The species Maackia amurensis belongs to the genus Maackia . The first scientific description of Maackia amurensis was made by Franz Josef Ruprecht and Karl Johann Maximowicz . A synonym of Maackia amurensis Rupr. & Maxim. is Cladrastis amurensis (Rupr.) Benth. ex Maxim.

There are two varieties :

Maackia amurensis Rupr. & Maxim. var. amurensis : nominate form
Maackia amurensis var. Buergeri (Maxim.) CKSchneid. : The leaflets are blunt and not pointed as in the nominate form, and hairy on the underside of the leaf. This variety occurs naturally in Japan.

use

The Asian yellowwood is used as an ornamental wood because of its decorative inflorescences.

proof

literature

Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , p. 396.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Roloff et al .: Flora of the woods
↑ ^a ^b ^c ^d ^e ^f ^g Bojian Bao, Michael A. Vincent: Maackia amurensis , p. 96 - online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven & Deyuan Hong (eds.): Flora of China , Volume 10 - Fabaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2010, ISBN 978-1-930723-91-7 .
↑ Maackia amurensis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
↑ Maackia amurensis in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 3, 2010.

Web links

Commons : Asiatic Yellowwood ( Maackia amurensis ) - Album with pictures, videos and audio files

Maackia amurensis inthe IUCN 2013 Red List of Threatened Species . Posted by: S. Contu, 2010. Retrieved May 11, 2014.

[FdG-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Roloff et al .: Flora of the woods

[FoC-2] ↑ ^a ^b ^c ^d ^e ^f ^g Bojian Bao, Michael A. Vincent: Maackia amurensis , p. 96 - online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven & Deyuan Hong (eds.): Flora of China , Volume 10 - Fabaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2010, ISBN 978-1-930723-91-7 .

[IPCN-3] Maackia amurensis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

[GRIN-4] Maackia amurensis in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 3, 2010.