Small-flowered Deutzia

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Small-flowered Deutzia
Deutzia parviflora var. Amurensis

Deutzia parviflora var. Amurensis

Systematics
Nuclear eudicotyledons
Asterids
Order : Dogwood-like (Cornales)
Family : Hydrangea family (Hydrangeaceae)
Genre : Deutzia ( Deutzia )
Type : Small-flowered Deutzia
Scientific name
Deutzia parviflora
Bunge

The small-flowered Deutzia ( Deutzia parviflora ) is a richly branched shrub with white, star-shaped flowers from the hydrangea family (Hydrangeaceae). The natural range of the species is in China, Korea and in the east of Russia. It is sometimes planted as an ornamental shrub .

description

The small-flowered Deutzia is an up to 2 meters high, richly branched shrub . The branches carrying flowers are 3 to 8 inches long, star-haired , and have four to six leaves. The leaves have a 3 to 8 millimeter long, gray-brown to gray stem. The leaf blade is simple, ovate-lanceolate or oval-ovate, 3 to 6 rarely up to 10 centimeters long and 2 to 4.5 centimeters wide, pointed or pointed long, with a rounded or broadly wedge-shaped base and a finely serrated leaf margin. The upper side of the leaf is covered with five, rarely six-pointed star hairs; the underside is covered with six to twelve-pointed star hair, the hair on the central vein also has a long central hair.

The inflorescences are 2 to 5 centimeters in diameter, multi-flowered umbels with a shaggy hairy or star-haired inflorescence axis. The flower stalk is 2 to 12 millimeters long. The flower cup is dome-shaped, about 3.5 centimeters long with a diameter of 3 centimeters and densely covered with star hair. The calyx tips are triangular, shorter than the flower cup, with a blunt tip. The petals are white, rounded to broadly ovate, 2.5 to 7.5 millimeters long, hairy on both sides, with a tapering base and blunt tip. The outer stamens are 4 to 4.5 millimeters long, the inner 3 to 4 millimeters. The stamens are sub-like, the outer ones have no teeth, the inner two teeth that do not reach to the anthers. The anthers are stalked and rounded. The three styles are shorter than the stamens. The capsule fruits are hemispherical and have a diameter of 2 to 3 millimeters. The small-flowered Deutzia flowers from April to June, the fruits ripen from July to October.

Occurrence and location requirements

The natural range is in the temperate zone of Asia in the Primorye region in Russia, in the Chinese provinces of Gansu , Hebei , Heilongjiang , Henan , Hubei , Jilin , Liaoning , Shaanxi , Shanxi , in Inner Mongolia and on the Korean Peninsula . The small-flowered Deutzia grows in mixed forests and thickets, on mountain slopes and in valleys at an altitude of 300 to 1800 meters on moderately dry to fresh, slightly acidic to alkaline, sandy-loamy to loamy, nutrient-rich soils in sunny to light-shaded locations. The species loves warmth and is usually frost hardy.

Systematics

The Small-Deutzie ( Deutzia parviflora ) is a kind of the genus of deutzia ( Deutzia ). It is assigned to the subfamily Hydrangeoideae and the tribe Philadelpheae in the hydrangea family (Hydrangeaceae) . The species was first scientifically described by Alexander von Bunge in 1833 . The genus name Deutzia is reminiscent of the Dutch councilor Johan van der Deutz (1790 to 1858) from Amsterdam, a sponsor of the Swedish naturalist Carl Peter Thunberg , who named the genus. The specific epithet parviflora comes from Latin and means "small-flowered".

There are three varieties :

  • Deutzia parviflora var. Amurensis Rule : The star hairs of the median nerve on the underside of the leaf have no central hairs. The inflorescences have few flowers, the stamens have no or two teeth. The variety blooms in June, the fruits ripen in September. The distribution area is in mixed forests, thickets and mountain slopes at an altitude of 300 to 800 meters in the Chinese provinces of Jilin and Liaoning.
  • Deutzia parviflora var. Micrantha (Engler) Rehder : The star hairs of the median nerve on the underside of the leaf have a long central hair. The inflorescences are many-flowered, the petals are 2.5 to 3.5 millimeters long and the stamens have no teeth. The variety blooms in June, the fruits ripen from July to September. The distribution area is in mixed forests and valleys at an altitude of 1100 to 1800 meters in the Chinese provinces of Hebei, Henan, Shaanxi and Shanxi. The variety was described by Adolf Engler as a separate species Deutzia micrantha Engler as a separate species.
  • Deutzia parviflora var. Parviflora : The star hairs of the middle nerve on the underside of the leaf have a long central hair. The inflorescences are many-flowered, the petals are rarely from 3, usually 4 to 7.5 millimeters long. The filaments have no teeth or the inner ones have two teeth. The variety blooms from April to June, the fruits ripen from August to October. The distribution area is in mixed forests, on mountain slopes and in valleys at an altitude of 1000 to 1500 meters in Russia, Korea and in the Chinese provinces of Gansu, Hebei, Henan, Hubei, Jilin, Liaoning, Shaanxi, Shanxi and in Inner Mongolia.

use

The small-flowered Deutzia is sometimes used as an ornamental shrub because of its flowers .

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. 382-383 (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. 265.
  • Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 462 .
  • Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).

Individual evidence

  1. ↑ German name according to Roloff et al .: Flora der Gehölze , p. 265 and after Fitschen: Gehölzflora , p. 462
  2. ↑ a b c d Huang Shumei, Hideaki Ohba, Shinobu Akiyama: Deutzia parviflora , in: 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. 382 (English).
  3. ↑ a b c d Roloff et al .: Flora der Gehölze , p. 265
  4. ↑ a b Deutzia parviflora. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed May 11, 2012 .
  5. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 205
  6. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 461
  7. ↑ Huang Shumei, Hideaki Ohba, Shinobu Akiyama: Deutzia parviflora var. Amurensis , in: 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. 383 (English).
  8. ↑ Huang Shumei, Hideaki Ohba, Shinobu Akiyama: Deutzia parviflora var. Micrantha , in: 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. 383 (English).
  9. ↑ Huang Shumei, Hideaki Ohba, Shinobu Akiyama: Deutzia parviflora var. Parviflora , in: 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. 383 (English).

Web links

Commons : Deutzia parviflora  - collection of images, videos and audio files

Deutzia parviflora. In: The Plant List. Retrieved May 11, 2012 .