Spiraea fritschiana

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Spiraea fritschiana
Spiraea fritschiana 2015-06-01 OB 016.jpg

Spiraea fritschiana

Systematics
Eurosiden I
Order : Rose-like (rosales)
Family : Rose family (Rosaceae)
Subfamily : Spiraeoideae
Genre : Spear bushes ( Spiraea )
Type : Spiraea fritschiana
Scientific name
Spiraea fritschiana
CK cutting

Spiraea fritschiana is a white flowering shrub with 1.5 to 8 centimeters long leaf blades from the genus of the sparaceous bushes. Its natural range is in China.

description

Spiraea fritschiana is a 1 to 2 meter high shrub . The twigs are purple-brown to brownish, shiny, clearly angled, initially glabrous or sparsely hairy and later balding. The buds are egg-shaped, 5 to 6 millimeters long, pointed or pointed. Young buds are sparsely hairy and downy. They form several brown bud scales. The leaves are divided into a petiole and a leaf blade. The stalk is 2 to 5 millimeters long, initially hairy and later balding. The leaf blade is ovate, elliptical-ovate or elliptical-elongated, 1.5 to 8 inches long and 1.0 to 3.5 inches wide. The base of the spreader is broadly wedge-shaped, the end pointed or pointed, the edge of the spade is unevenly sawn, single or double. The upper side of the leaf is dark green, glabrous or sparsely hairy along the leaf veins. The underside is pale green and hairy downy.

As inflorescences are formed terminally on long, upright, annual and leafy shoots, 5 to 8 centimeters long and 6 to 10 centimeters in diameter panicles with numerous flowers. The inflorescence axis and the flower stalks are bare. The flower stalks are 4 to 7 millimeters long. The bracts are lanceolate or linear, 4 to 7 millimeters long and hairy downy. The flowers are 5 to 6 millimeters in diameter. The flower cup is bell-shaped and bare on the outside. The sepals are triangular, 1.5 to 2 millimeters long, about the same width as long, pointed and bent back on the fruit. The petals are white, with a hint of pink in the bud, egg-shaped, 2 to 4 millimeters long, 2 to 2.5 millimeters wide and glabrous. The end is blunt. The 25 to 30 stamens are longer than the petals. The disc is ring-shaped and shows eight to ten uneven, notched lobes. The styles are shorter than the stamens. More or less upright, glabrous or only partially downy hairy follicles with blunt ends are formed as fruits.

Spiraea fritschiana flowers in May and June, the fruits ripen from August to September.

The number of chromosomes is 2n = 36 or 27.

  • Inflorescences of Spiraea fritschiana , cultivar 'Wilma'

  • Spiraea fritschiana 2015-06-01 OB 015.jpg
  • Spiraea fritschiana 2015-06-01 OB 012.jpg

Distribution and ecology

The natural range is in China in the provinces Anhui , Gansu , Hebei , Heilongjiang , Henan , Hubei , Jiangsu , Jiangxi , Liaoning , Shaanxi , Shandong , Shanxi , Sichuan and Zhejiang . There the species grows in forests, forest edges and on rocky ground and on mountain slopes at heights of 100 to 2400 meters.

Systematics

Spiraea fritschiana is a kind from the genus of Spiraea ( Spirae ) in the family of Rosaceae (Rosaceae). It was first described in 1905 by Camillo Karl Schneider in the Bulletin de l'Herbier Boissier . Flora of China and the Germplasm Resources Information Network describe Spiraea fritschiana as a separate species, but according to the Plant List the name is only a synonym for Spiraea japonica L.f.

Plant List distinguishes three varieties :

  • Spiraea fritschiana var. Angulata (Fritsch ex CK Schneider) Rehder : The leaf blades are oblong-egg-shaped, 2.5 to 8 centimeters long and 1.5 to 3 centimeters wide and bare on both sides. The base of the spade is rounded. The fruit clusters have a diameter of 3 to 8 centimeters.
  • Spiraea fritschiana var. Fritschiana : The leaf blades are more or less hairy on both sides or glabrous on the upper side, the blade base is broadly wedge-shaped. The fruit clusters have a diameter of more than 6 centimeters.
  • Spiraea fritschiana var. Parvifolia Liou : The leaf blades are broadly ovate, ovate-elliptical or almost round, 1.5 to 3 centimeters long and 1 to 2 centimeters wide. The fruit clusters have a diameter of 3 to 6 centimeters.

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literature

  • Wu Zhengyi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 9: Pittosporaceae through Connaraceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2003, ISBN 1-930723-14-8 , pp. 68 (English).

Individual evidence

  1. ↑ a b c d e f g Cuizhi Gu, Chaoluan Li, Lingdi Lu, Shunyuan Jiang, Crinan Alexander, Bruce Bartholomew, Anthony R. Brach, David E. Boufford, Hiroshi Ikeda, Hideaki Ohba, Kenneth R. Robertson, Steven A. Spongberg: Spiraea fritschiana , in Flora of China , Volume 9, p. 53.
  2. ↑ Spiraea fritschiana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  3. ↑ a b Spiraea fritschiana in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
  4. ↑ Spiraea fritschiana. In: The International Plant Name Index. Retrieved July 26, 2014 .
  5. ↑ Spiraea fritschiana. In: The Plant List. Retrieved July 26, 2014 .

Web links

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