Tienshan currant
| Tienshan currant | ||||||||||||
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| Ribes diacanthum | ||||||||||||
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The Tienshan currant ( Ribes diacanthum ) is an approximately 2 meter high shrub with small, scarlet fruits from the gooseberry family (Grossulariaceae). The natural range of the species is in Asia. The species is rarely cultivated.
description
The tienshan currant is an upright shrub 1 to 2, rarely up to 3 meters high, with bare twigs that form two 3 to 5 millimeter long, fine spines at the nodes . The internodes are spineless or show scattered smaller spines. The buds are brownish, egg-shaped, 3 to 5 millimeters long, glabrous and pointed. The leaves have a 1 to 2 centimeter long, bare or rarely hairy petiole. The leaf blade is simple, three-lobed, obovate to rhombic obovate, 1.5 to 3.5 centimeters long and 1 to 3 centimeters wide, glabrous, with a wedge-shaped base. The lobes are deeply serrated and have pointed or blunt ends.
The flowers are dioecious . The male inflorescences are 3 to 6 centimeters long, nodding clusters of 10 to 20 flowers. The female inflorescences are 1 to 2.5 inches long and consist of 10 to 15 flowers. The inflorescence spindles are loosely covered with short glandular hairs . The bracts are 4 to 6 millimeters long, glabrous, lanceolate to tongue-shaped and single-veined . The flower stalks are loose and hairy with short glands and 2 to 4 millimeters long. The flower cup is yellowish green and bare, 1 to 1.5 millimeters long, with upright, egg-shaped to rarely oval tips 1.5 to 2 millimeters long. The petals are greenish yellow, wedge-shaped-round and 0.5 to 1 millimeter long. The stamens are about the same length or slightly shorter than the petals. The ovary is round and bare. The stylus is divided into two at the tip. The fruits are scarlet, round to ovoid-round, glabrous with a diameter of 5 to 9 millimeters.
The tienshan currant flowers from May to June, the fruits ripen from August to September.
The number of chromosomes is 2n = 16.
Occurrence and location requirements
The natural range is in the Republic of Buryatia and the Transbaikalia region in Siberia , Russia, in northeastern Mongolia, in the Chinese provinces of Heilongjiang , Jilin and in Inner Mongolia and in the north of the Korean Peninsula . The species has become feral in Manitoba . The Tienshan currant grows in floodplains and river banks below 1500 meters altitude on moderately dry, fresh to moist, neutral to alkaline, sandy-gravelly and very nutrient-rich soils in partially shaded, cool to cold locations. The species is frost hardy .
Systematics
The Tienshan currant ( Ribes diacanthum ) is a species from the genus of currants ( Ribes ) in the gooseberry family (Grossulariaceae). It is assigned in the subgenus Berisia of the section Diacantha . The species was first scientifically described by Peter Simon von Pallas in 1776 . The generic name Ribes is derived from the Arabic name of a type of rhubarb . The name was adopted for currants in the Middle Ages because of the sour taste of the berries, which is reminiscent of the taste of rhubarb.
use
The tienshan currant is rarely cultivated.
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. 447 (English).
- Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Volume 8: Magnoliophyta: Paeoniaceae to Ericaceae . Oxford University Press, New York / Oxford a. a. 2009, ISBN 978-0-19-534026-6 , pp. 14 (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. 538.
- Jost Fitschen : Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 730 .
- 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. 538 and after Fitschen: Gehölzflora , p. 730
- ↑ a b c Lu Lingdi, Crinan Alexander: Ribes diacanthum , 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. 447 (English).
- ↑ a b c d Roloff et al .: Flora der Gehölze , p. 538
- ^ A b Nancy R. Morin: Ribes diacanthum , in: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Volume 8: Magnoliophyta: Paeoniaceae to Ericaceae . Oxford University Press, New York / Oxford a. a. 2009, ISBN 978-0-19-534026-6 , pp. 14 (English).
- ^ Ribes diacanthum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b c Ribes diacanthum. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed May 5, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names, pp. 538–539
Web links
Ribes diacanthum. In: The Plant List. Retrieved May 5, 2012 .