Panicle hydrangea

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Panicle hydrangea
Variety 'Grandiflora'

Variety 'Grandiflora'

Systematics
Asterids
Order : Dogwood-like (Cornales)
Family : Hydrangea family (Hydrangeaceae)
Subfamily : Hydrangeoideae
Genre : Hydrangeas ( Hydrangea )
Type : Panicle hydrangea
Scientific name
Hydrangea paniculata
Siebold

The panicle hydrangea ( Hydrangea paniculata ) is a shrub or small tree belonging to the hydrangea family . It is very often used as an ornamental plant because of the decorative flowers . The natural range is in Japan and China.

description

Inflorescence and leaves of the cultivar 'Grandiflora'
Sterile bloom

The panicle hydrangea forms 1 to 5 meter high shrubs or small trees with dark to gray-brown, pressed hairy and later balding branches that are covered with oval cork pores . The leaves are in pairs against constantly or Dreierquirlen. They have a 1 to 3 centimeter long stem. The leaf blade is simple , 5 to 14 inches long and 6 to 6.5 inches wide, oval to ovate , pointed or pointed long, with a rounded or broad wedge-shaped base and a serrated edge . The upper side of the leaf is bald to slightly curly haired, the underside with shaggy hair when pressed along the nerves. Six to seven pairs of nerves are formed.

The flowers are arranged in paniculate , 26 cm long, densely hairy umbels . The sterile flowers have four 1 to 1.8 centimeters long and 0.8 to 1.4 centimeters wide, white, broadly elliptical to rounded, unequal long, entire sepals . The fertile flowers have an approximately 1.1 millimeter long, top-shaped calyx tube with 1 millimeter long, triangular calyx teeth. The petals are 2.5 to 3.0 millimeters long, white and ovate to lanceolate-ovate. The ten stamens are unequal in length, the longer ones up to 4.5 millimeters, the others a little shorter than the petals. The anthers are about 0.5 millimeters long and round. The ovary is medium-sized, the three styles are sub-like and about 1 millimeter long. The scar is small and heady.

The capsule fruits are elliptical and have a diameter of 3.0 to 3.5 millimeters. The seeds are brown, spindle-shaped, compressed and have wings about 2.5 to 3 millimeters long at both ends. The capsule fruits each contain between 30 and 100 seeds.

The species blooms from July to August, the fruits ripen from October to November.

The number of chromosomes is 2n = 72 or 108.

Distribution and ecology

The natural range is in the temperate zone of Asia. The species is found in Russia on the Kuriles and Sakhalin , in the Chinese provinces of Anhui , Fujian , Gansu , Guangdong , Guangxi , Guizhou , Hubei , Hunan , Jiangxi , Sichuan , Yunnan and Zhejiang and on the Japanese islands of Hokkaidō , Honshū , Kyushu and Shikoku . It was naturalized in the northeast and southeast of the United States. It grows in species-rich forests, in floodplains and river banks at heights of 300 to 3100 meters on fresh to moist, acidic to neutral, sandy-gravelly soils in shady locations. The species loves warmth and is usually frost hardy.

Systematics

The panicle hydrangea ( Hydrangea paniculata ) is a species from the genus of hydrangeas ( Hydrangea ) in the family of hydrangea plants (Hydrangeaceae), subfamily Hydrangeoideae, tribe Hydrangeae. It was first described by Philipp Franz von Siebold in 1829 . A synonym of the species is Hydrangea verticillata .

use

The panicle hydrangea is very often used as an ornamental wood because of its decorative flowers .

There are numerous varieties , including:

  • 'Floribunda' with loose, narrow, conical, 45 centimeter long inflorescences and creamy white sterile and fertile flowers.
  • 'Grandiflora' with broad, conical, 15 to 30 centimeters long inflorescences. The majority of the flowers are sterile and creamy white.
  • 'Kyushu' with slim, cone-shaped, loose, up to 20 centimeters long inflorescences. The majority of the flowers are also sterile and creamy white.
  • 'Limelight' with broad, conical, up to 25 centimeters long and equally wide inflorescences. The majority of the flowers are sterile, the flowers are initially greenish white to light lemon yellow and later become matt white.
  • 'Pink Diamond' with broad, conical, up to 30 centimeters long inflorescences. The sterile flowers are initially creamy white, later light pink and deep pink as they fade. The fertile flowers are initially cream-colored and finally almost red.
  • 'Praecox' with flattened, spherical inflorescences up to 20 centimeters wide. The sterile flowers are large and dull, creamy white, but not numerous.
  • 'Ruby' with short, very broad inflorescences and mostly sterile, carmine to dark pink flowers.
  • 'Unique' with broad, conical, up to 40 centimeters long inflorescences. The sterile flowers are up to 5 centimeters wide and creamy white.

proof

literature

  • Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 8: Brassicaceae through Saxifragaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2001, ISBN 0-915279-93-2 , pp. 417 (English).
  • 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. 340.
  • Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 529 .
  • Gordon Cheers (Editor): Botanica Trees & Shrubs . Tandem Verlag GmbH, 2006, ISBN 978-3-8331-2003-9 , pp. 449 .

Individual evidence

  1. ↑ German name according to Roloff et al .: Flora der Gehölze , p. 340 and Fitschen: Gehölzflora , p. 528.
  2. ^ A b c d Wei Zhaofen, Bruce Bartholomew: Hydrangea paniculata in Flora of China. Volume 8, p. 417.
  3. ↑ a b c d e Roloff et al .: Flora der Gehölze , p. 340.
  4. ^ Reed 2004: "Self-incompatibility and Time of Stigma Reciptivity in Two Species of Hydrangea", "HortScience" 39 (2), pp. 312-315.
  5. ^ Hydrangea paniculata at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  6. ↑ a b Hydrangea paniculata. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed March 11, 2012 .

Web links

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