Rock Valerian
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Rock Valerian ( Valeriana saxatilis ) |
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| Valeriana saxatilis | ||||||||||||
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The rock valerian ( Valeriana saxatilis ) is a species of plant from the subfamily of the valerian family (Valerianoideae), which occurs in the limestone regions of the Eastern Alps.
description
They are perennial herbs ( hemicryptophyte ). The stems, which are mostly only branched in the area of the inflorescence, reach heights of 5 to 30 cm.
The undivided basal sheets are broadly oval to spatulate. In addition to the central rib, two other side ribs can often be seen that run forward in an arc. In contrast to the similar mountain valerian, there are at most one pair of stem leaves. These are much smaller than the basal leaves and linear in shape.
The 1–2 mm long, mostly white, sometimes slightly pink flowers are in panicles . These are less floriferous and not as clearly umbrella-shaped as most other valerian species. Often, for example, the lowest side branches stand out clearly from the rest of the inflorescence.
The flowering period is between June and July.
The number of chromosomes is 2n = 24.
Distribution and location requirements
The species grows in subalpine to alpine limestone crevices. In Central Europe it is a character species of the Potentilletum caulescentis, but also occurs in the Caricion davallianae. In the Allgäu Alps it rises to over 2000 meters.
Its distribution area extends from eastern Switzerland over the eastern limestone Alps to the southeast over the limestone mountains of Yugoslavia to Albania. It includes Germany, Italy, Austria, Liechtenstein, Switzerland, Slovenia, Croatia, Montenegro, Serbia, Albania and Romania. An isolated occurrence is in the Apuan Alps .
Systematics
One can distinguish between two subspecies:
- Valeriana saxatilis L. subsp. saxatilis
- Valeriana saxatilis subsp. pancicii (Halácsy & Bald.) Ockendon (Syn .: Valeriana pancicii Halácsy & Bald. ): It occurs in Serbia, Montenegro and Albania.
literature
- Henning Haeupler , Thomas Muer: picture atlas of the fern and flowering plants of Germany (= the fern and flowering plants of Germany. Volume 2). Published by the Federal Agency for Nature Conservation. Ulmer, Stuttgart 2000, ISBN 3-8001-3364-4 .
- Werner Rothmaler : Excursion flora for the areas of the GDR and the FRG. Volume 2: Vascular Plants, 14th Edition. People and knowledge, Berlin 1988, ISBN 3-060-12539-2 .
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. 882 .
- ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 2, IHW, Eching 2004, ISBN 3-930167-61-1 , p. 537.
- ^ A b c E. by Raab-Straube & T. Henning (2017+): Valerianaceae. - In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Data sheet Valerianaceae
Web links
- Rock Valerian. In: FloraWeb.de.
- Rock Valerian . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Valeriana saxatilis L. In: Info Flora , the national data and information center for Swiss flora . Retrieved March 31, 2016.
- Thomas Meyer: Valerian data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- Flora of Austria - Valeriana saxatilis
- Swiss Webflora - species index.