Long-leaved Deutzia
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The long-leaved Deutzia ( Deutzia longifolia ) is an upright shrub with flowers that are white on the inside and pink to purple on the outside from the hydrangea family (Hydrangeaceae). The natural range of the species is in China . It is sometimes planted as an ornamental shrub .
description
The long-leaved Deutzia is an upright shrub 1.5 to 2 meters high . The branches that carry flowers are 5 to 15, rarely up to 20 centimeters long and have four to six leaves. The leaves have a 3 to 8 millimeter long stem. The leaf blade is simple, lanceolate or oval-lanceolate, 3 to 11 centimeters long and 1 to 4 centimeters wide, leathery, long and pointed, with a wedge-shaped to broadly wedge-shaped base and a finely serrated leaf margin. Four to six pairs of nerves are formed. The upper side of the leaf is rough and loosely covered with four to six, rarely seven-pointed star hairs; the underside is gray-green and densely covered with eight to twelve-rayed star hairs, the hairs on the veins also have a central hair.
The inflorescences are 4.5 to 8 centimeters long and 2.5 to 6 centimeters wide cymes with 9 to 12 flowers . The flower stalk is 3 to 12 millimeters long. The flower cup is 3 to 4 millimeters in diameter, 3.5 to 4.5 millimeters long and densely covered with gray, twelve to fourteen-pointed star hairs. The calyx tips are lanceolate, oblong-lanceolate, triangular or long-triangular, shorter or the same length as the flower cup, with one to three leaf veins. The petals are pink to purple, oval to obovate-oval, 10 to 13 millimeters long and 6 to 8 millimeters wide. The outer stamens are 5 to 9 millimeters long. The stamens have two teeth at the tip that extend to the anthers or beyond. The anthers are stalked and elongated. The inner stamens are 4 to 7 millimeters long. The stamens are blunt and two to three lobed at the tip. The anthers grow outside, near the center of the stamens. The three or four, rarely up to six styles are slightly shorter or about the same length as the stamens. The capsule fruits are brown, hemispherical, with permanent, recurved calyx tips. They have a diameter of about 5 millimeters. The long-leaved Deutzia flowers from June to August, the fruits ripen from September to November.
Occurrence and location requirements
The natural range is in China in the provinces of Gansu , Guizhou , Sichuan and in the northeast of Yunnan . The long-leaved Deutzia grows in forests and thickets, on mountain slopes and river banks at 1,800 to 3,200 meters above sea level on moderately dry, fresh or moist, slightly acidic to neutral, sandy soils in shady locations. The species loves warmth and is usually frost hardy.
Systematics
The Langblättrige Deutzie ( Deutzia longifolia ) 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 in 1886 by Adrien René Franchet . 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 longifolia comes from Latin and means "long-leaved".
There are two varieties:
- Deutzia longifolia var. Longifolia with a 5 to 11 centimeter long and 1.5 to 4 centimeter wide leaf blade, a 2 to 2.4 centimeter diameter corolla and an approximately 4.5 millimeter long and 4 millimeter diameter flower cup. The calyx tips are lanceolate or oblong lanceolate and slightly shorter to the same length as the flower cup.
- Deutzia longifolia var. Pingwuensis S. M. Hwang with 3 to 5 centimeters long and 1 to 1.2 centimeters wide leaf blades, 1.5 to 2 centimeters diameter corolla and about 3.5 millimeters long and 3 millimeters diameter flower cups. The calyx tips are triangular or long-triangular and shorter than the flower cup.
use
The long-leaved 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. 391 (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. 264.
- Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 461 .
- 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
- ↑ German name after Roloff et al .: Flora der Gehölze , p. 264 and after Fitschen: Gehölzflora , p. 461
- ↑ a b c d Huang Shumei, Hideaki Ohba, Shinobu Akiyama: Deutzia longifolia , 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. 391 (English).
- ↑ a b c d Roloff et al .: Flora der Gehölze , p. 264
- ↑ a b Deutzia longifolia. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed May 11, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 205
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 349
Web links
Deutzia longifolia. In: The Plant List. Retrieved May 11, 2012 .