Spotted sand rose
| Spotted sand rose | ||||||||||||
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Spotted Sandherb ( Tuberaria guttata ) |
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| Tuberaria guttata | ||||||||||||
| ( L. ) Fourr. |
The spotted sandherb ( Tuberaria guttata ) is a species of sandherb ( Tuberaria ) within the family of the rockrose plants (Cistaceae).
description
Vegetative characteristics
The spotted sandherb grows as a graceful, little branched annual , herbaceous plant and reaches heights of 5 to 30 centimeters. The aboveground parts of the plant are hairy protruding. The stem leaves are arranged opposite one another. The lower stem leaves are elongated-elliptical to obovate and resemble the leaves of the base rosette, which is usually already dried up by the time of flowering. The upper stem leaves are up to 3 centimeters long, linear-lanceolate, sessile, three-veined and provided with star hairs on both sides.
Generative characteristics
The flowering period extends from March to June. The long-stalked flowers stand together in terminal, loose, racemose inflorescences . The hermaphroditic flowers are one to two centimeters in diameter and are radially symmetrical and five-fold with a double flower envelope . Of the five sepals , the inner three are larger and broader than the two outer ones. The five, free petals are light yellow, sometimes whitish and spotted dark brown at the base.
The capsule fruits are on protruding or downward sloping stems.
The number of chromosomes is 2n = 24, 36 or 48.
Occurrence and endangerment
The spotted sand rose is a Mediterranean - Atlantic floral element . It is distributed throughout the Mediterranean , the Canary Islands and parts of Western Europe to Ireland .
It prefers sunny locations on sandy soils ; Garigues , maquis , grass corridors. In Central Europe it is a character species of the Thero-Airion association, in southern Europe a character species of the order Helianthemetalia guttati.
In Germany, the spotted sandflower is threatened with extinction; It is on the Red List of Endangered Plant Species in Germany from 1996 at level 1.
photos
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literature
- Dankwart Seidel: Flowers on the Mediterranean. Determine accurately with the 3-check . BLV, Munich 2002, ISBN 3-405-16294-7 .
Individual evidence
- ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp. 668 .
Web links
- Spotted sand rose . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Tuberaria guttata (L.) Fourr., Speckled Sandherb. In: FloraWeb.de.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Distribution in the Netherlands.
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- Data sheet with photo and distribution in France at Tela Botanica .