Dwarf yellow star
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Dwarf yellow star ( Gagea pusilla ) |
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| ( Schmidt ) Schult. |
The dwarf yellow star ( Gagea pusilla ) is a species of yellow star ( Gagea ). It must not be confused with the small yellow star ( Gagea minima ), which is sometimes referred to as the dwarf yellow star.
description
The dwarf yellow star is a small, perennial herbaceous plant that develops a single (rarely two), upright, underground onion as a perennial organ and is therefore counted among the onion geophytes . It reaches a stature height of usually 3 to 5, less often 10 centimeters.
The dwarf yellow star forms a basal, narrow-linear, almost thread-shaped, often channel-shaped, not hollow, blue-green leaf that is 1.5 to 3 millimeters wide and becomes narrower towards the tip of the leaf. It mostly clearly towers above the inflorescence.
Under the umbel-like inflorescence , two to three almost opposite, bald or ciliate, lanceolate bracts are formed, the lower of which is usually longer than the inflorescence. The arm-flowered inflorescence consists of one to three, less often more, small, yellow, hermaphrodite flowers, the elongated, at the front rounded tepals are about 8 to 13 millimeters long. The flower stalks are bare. The fruit is egg-shaped.
Flowering time is from March to April. As a spring geophyte , it uses the damp spring for the growing season and moves in a little later to survive the dry summer as an onion. The species is diploid with the number of chromosomes 2n = 24.
Ecology and occurrence
The dwarf yellow star occurs in Central Europe in South Moravia, Slovakia, Austria , Hungary and southwest Slovenia . In addition, it occurs from southeastern Europe to the Caucasus.
In Austria the dwarf yellow star is rare in the Pannonian region , otherwise very rare. It grows in the federal states of Burgenland , Lower Austria , Vienna and unconfirmed in Carinthia in the colline to submontane heights in (semi) dry grass , dry bush fringes, on artificial turf, embankments, dams, cemeteries and rarely in vineyards. The species is considered endangered in Austria.
Individual evidence
- ^ Tropicos. [1]
- ^ A b Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 1036 .
- ↑ Entry at Euro + Med
- ↑ Rafaël Govaerts (ed.): Gagea pusilla. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 29, 2016.
- ↑ Wolfgang Adler, Alexander Ch. Mrkvicka (Ed.): The flora of Vienna - yesterday and today. The wild fern and flowering plants in the city of Vienna from the middle of the 19th century to the turn of the millennium , Vienna 2003, p. 635, ISBN 978-3900275969
literature
- Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 1036 .
- Raimund Fischer: Blossom diversity in the Pannonikum , 2004, IHW-Verlag Eching near Munich, ISBN 3-930167-51-4
