Carinthian Hornwort
| Carinthian Hornwort | ||||||||||||
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Carinthian hornwort ( Cerastium carinthiacum subsp. Carinthiacum ) |
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| Cerastium carinthiacum | ||||||||||||
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The Carinthian hornwort ( Cerastium carinthiacum ) is a plant species that belongs to the genus of hornworts ( Cerastium ) within the carnation family (Caryophyllaceae).
description
Vegetative characteristics
The Carinthian hornwort grows as a perennial herbaceous plant and reaches heights of 10 to 20 centimeters. Basically it has mostly vegetative shoots and flowering shoots without short, vegetative tufts of leaves or buds in the leaves axils. The leaves are opposite.
Generative characteristics
The flowering period extends from June to September. Depending on the subspecies, the foliage-like bracts are without a skin edge and at most with a dry-skinned tip or with broad skin-edge. The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The five petals are at least 1.5 to 2.25 times as long as the five sepals . There are always ten stamens . It has five styluses.
The capsule fruit is at least twice as long as the sepals and has ten fruit teeth. The seeds have indistinct bumps on the shrinking seed coat that is loosely attached to the inside of the seed .
The number of chromosomes is 2n = 36.
Systematics and distribution
Cerastium carinthiacum was first published in 1808 by Lorenz Chrysanth from Vest in Hoppe, Neues Taschenbuch , page 229.
The distribution area includes Italy, Switzerland, Austria and Slovenia. Earlier data for Poland, Slovakia and Romania belong to Cerastium latifolium .
From Cerastium carinthiacum there are two subspecies:
- Southern Alps hornwort ( Cerastium carinthiacum subsp. Austroalpinum ): The parts of the plant are usually thickly glandular, the uppermost bracts have no skin edge only with a dry-skinned tip and the sepals are 5 to 6 millimeters long. Stony lawns, limestone rubble and scree slopes, limestone , subalpine to alpine. It occurs scattered or rarely in Styria and Carinthia ( Karawanken ) and East Tyrol ; also in Switzerland, Italy and Slovenia.
- Actual Carinthian hornwort ( Cerastium carinthiacum subsp. Carinthiacum ): The parts of the plant are mostly almost bare, the uppermost bracts have broad skin-margined edges and the sepals are 3 to 6 millimeters long. Rock debris and rock corridors, Scots pine bushes, limestone, subalpine to alpine, often to scattered in all Austrian federal states (absent in Vienna , Burgenland , Vorarlberg ). It also occurs in Italy, Switzerland and Slovenia.
literature
- Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria. Ed .: Manfred A. Fischer . Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
Individual evidence
- ↑ Cerastium carinthiacum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b Karol Marhold, 2011: Caryophyllaceae : Datasheet Cerastium carinthiacum In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
- ↑ Jaakko Jalas, Juha Suominen: Atlas florae europaeae . Volume 6 (Caryophyllaceae (Alsinoideae and Paronychioidae)). Page 100, Helsinki 1983. ISBN 951-9108-05-X
- ↑ Caryophyllaceae / Cerastium carinthiacum subsp. austroalpinum (Cerastium austroalpinum) - Southern Alps Hornwort - data sheet with photo at Botanik im Bild / Flora von Österreich , 2005-08-16
