Silver perovskia
| Silver perovskia | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Silver Perovskia ( Perovskia atriplicifolia ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Perovskia atriplicifolia | ||||||||||||
| Benth. |
The Perovskia Atriplicifolia ( Perovskia atriplicifolia ) is a shrub with blue flowers from the family of the mint (Lamiaceae). The natural range is in Asia. The species is often used as an ornamental shrub. According to R. Govaerts, the species is better placed than Salvia yangii B.T.Drew in the genus Salvia .
description
The silver perovskia is a 50 centimeter high subshrub with rounded, rod-shaped, densely silvery star-haired shoots that are covered with yellow glands. The leaves have a 4 to 6 millimeter long petiole. The leaf blade is 4 to 5, rarely 6 inches long, 0.4 to 0.9 inches wide, linear-lanceolate, simply pinnate, with a wedge-shaped base. The lobes are elongated to oval, blunt, 2 to 4 millimeters long and 1 to 1.5 millimeters wide, sparsely star-haired and densely covered with yellow glands.
The flowers to grow from two to six in Scheinwirteln , which in loose, long 10 to 15 centimeters, conical panicles are arranged. The bracts are membranous, purple, about 0.7 millimeters long and 0.4 millimeters wide, egg-shaped to oval, with a white ciliate margin. They fall off early. The flower stalk is 1 to 1.5 millimeters long, densely hairy and drooping. The calyx is 5 to 6 millimeters long and 1.5 to 2.5 millimeters wide, purple, densely white or purple wire-haired at the base and covered with yellow glands. The edge is ciliate, the tip sparsely hairy to bald. The calyx tube is 4 to 5 millimeters long with a diameter of 1.5 to 2 millimeters. The upper lip of the calyx is 1 millimeter long and 2 millimeters wide and indistinctly three-toothed. The lower lip is a little shorter than the upper one. The corolla is blue, about 1 centimeter long, glabrous and sparsely covered with glands. The corolla tube is 5 to 6 millimeters long and 2 millimeters wide. The upper crown lip is 3 to 3.5 millimeters long, 4 to 4.5 millimeters wide and striped dark purple. The lobes are oval to egg-shaped, the middle lobe is about 1.5 millimeters long and 1 millimeter wide, the side lobes are 1 millimeter long and 1.5 millimeters wide. The lower lip is oblong-oval, about 3 millimeters long and 1 millimeter wide, entire and blunt.
As fruits about 2 millimeters long and 1 millimeter wide are Nüsschen formed with a blunt end.
The silver perovskia blooms from June to July, the fruits ripen from July to August.
The number of chromosomes is 2n = 20.
Distribution and location requirements
The natural range is in Asia in Afghanistan and Iran, in China in the autonomous regions of Xinjiang and Tibet as well as in Pakistan. The silver perovskia grows in steppes and dry forests on dry to fresh, weakly acidic to strongly alkaline, sandy, sandy-gravelly or sandy-loamy, nutrient-rich soils in sunny and hot locations. The species is sensitive to moisture and frost. It is assigned to winter hardiness zone 7a with mean annual minimum temperatures of −17.7 to −15 ° C.
Systematics
The Perovskia Atriplicifolia ( Perovskia atriplicifolia ) is a kind of the genus of Perovskia ( Perovskia ) in the family of Labiatae (Lamiaceae). There it is assigned to the tribe Mentheae in the subfamily Nepetoideae . The species was first scientifically described by George Bentham in 1848 . The generic name Perovskia is reminiscent of the Russian general and governor of the Orenburg Province Vasily Alexejewitsch Perowski (1794-1857). The specific epithet atriplicifolia is derived from Atriplex , the generic name of the reports and from - folius , Latin for "leafy" and thus describes the shape of the leaves, which is similar to that of the reports.
use
The silver perovskia is often used as an ornamental shrub because of its decorative and fragrant flowers .
proof
literature
- Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . tape 17 : Verbenaceae through Solanaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1994, ISBN 0-915279-24-X , pp. 223 (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. 445.
- Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 628 .
- 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. 445 and after Fitschen: Gehölzflora , p. 628
- ↑ Rafaël Govaerts (Ed.): Perovskia atriplicifolia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved January 2, 2019.
- ↑ a b Xi-wen Li, Ian C. Hedge: Perovskia atriplicifolia in Flora of China , Volume 17, p. 223
- ↑ a b c d Roloff et al .: Flora der Gehölze , p. 445
- ^ Perovskia atriplicifolia at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b c Perovskia atriplicifolia. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed June 16, 2012 .
- ^ G. Karelin: Perovskia et Sucthelenia, nova genera plantarum . In: Bull. Soc. Imp.Naturalistes Moscou 1841: 15-16, 1841
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 85
Web links
- Perovskia atriplicifolia. In: The Plant List. Retrieved June 16, 2012 .