Decumbent goat clover

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Decumbent goat clover
Cytisus decumbens 001.JPG

Decumbent goose clover ( Cytisus decumbens )

Systematics
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Tribe : Genisteae
Genre : Goat clover ( Cytisus )
Type : Decumbent goat clover
Scientific name
Cytisus decumbens
( Durande ) Spach

The low-lying goose clover ( Cytisus decumbens ), also called yellow creeping gorse or pillow gorse, is a species of the goose clover ( Cytisus ) in the subfamily of the butterflies (Faboideae).

description

The low-lying goat clover is a 10 to 30 cm high shrub with low-lying or ascending, branched branches that are slightly angular and hairy. The alternate, almost sedentary leaves are entire, ovate and up to 20 mm long. The underside is hairy protruding. Stipules are absent.

The one to four flowers sit together in the leaf axils. The flowers are stalked, the stalks reach two to four times the length of the calyx when in full bloom. The calyx is scattered, protruding hairy, bell-shaped and deeply two-lipped with short teeth of different lengths. The crown is 12 to 16 mm long and yellow. The flag and boat are bare, the boat is as long as the flag and wing together. The densely hairy legume is 20 to 40 mm long. Flowering time is from June to July.

The number of chromosomes is 2n = 48.

Occurrence

This species occurs from the Pyrenees to the Balkans , as well as in the southern Jura , in the southern Alps and in the Apennines . It is mainly found in the montane altitude range, up to altitudes of 1500 m. Here it colonizes dry and semi-arid grasslands, also forest edges on calcareous subsoil. In Switzerland, this species is classified as critically endangered on the Red List of Threatened Species, the causes are bush cover and intensive grazing. In terms of plant sociology, it is a species of the order Brometalia in Central Europe.

Taxonomy

The low-lying goat clover was first described in 1782 by Jean François Durande under the name Spartium decumbens . Édouard Spach transferred it to the genus Cytisus in 1845 . Cytisus decumbens ( Durande ) Spach is placed within the genus Cytisus in the section Corothamnus ( WDJ Koch ) Nyman . Further synonyms are: Corothamnus decumbens ( Durande ) K. Koch , Genista decumbens ( Durande ) Willd. , Genista prostrata Lam. , Genista pedunculata L'Hér. , Genista pedunculata L'Hér. subsp. decumbens ( Durande ) chamois .

Cytisus decumbens subsp. pindicola ( Bald. ) KI Chr. (Syn .: Cytisus decumbens var. pindicola ( Bald. ) Hayek , Corothamnus medius ( Halácsy ) Skalická , Cytisus medius Halácsy ) is a clan bound to serpentinite in Epirus (Greece) with young dense hairy hairs , ripe bald legumes.

supporting documents

literature

  • Xaver Finkenzeller, Jürke Grau: Alpine flowers. Recognize and determine (=  Steinbach's natural guide ). New edited edition. Mosaik, Munich 1996, ISBN 3-576-10558-1 , p. 136 .
  • Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 581.

Individual evidence

  1. ^ A b c Salvador Talavera: Cytisus . In: Santiago Castroviejo, Salvador Talavera, Carlos Aedo, Carlos Romero Zarco, Llorenç Sáez, Francisco Javier Salgueiro, Mauricio Velayos (eds.): Flora Ibérica. Plantas vasculares de la Península Ibérica e Islas Baleares . Vol VII (1). Leguminosae (partim) . Real Jardín Botánico, CSIC, Madrid 1999, ISBN 84-00-07821-7 , p. 179–180 ( PDF file , compilation of synonyms from the register ).
  2. ^ Daniel M. Moser: EN Cytisus decumbens (Durande) Spach - Niederliegender Geissklee - Fabaceae. In: Christoph Käsermann, Daniel M. Moser (Hrsg.): Information sheets on species protection - flowering plants and ferns. Federal Office for the Environment, Forests and Landscape, Bern 1999, pp. 114–115 (PDF file).
  3. ^ 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.  581 .
  4. ^ Jean François Durande: Flore de Bourgogne. Volume 1, LN Frantin, Dijon 1782, p. 299 (online) .
  5. ^ Édouard Spach: Revisio generis Genista (suite). In: Annales de Sciences Naturelles, Botanique, Series 3. Volume 3, No. 2–3, 1845, pp. 102–158 (here: p. 156 ).
  6. ↑ Panayiotis Dimopoulos, Thomas Raus, Erwin Bergmeier, Theophanis Constantinidis, Gregoris Iatrou, Stella Kokkini, Arne Strid, Dimitrios Tzanoudakis: Vascular Plants of Greece: An Annotated Checklist. (= Englera. Volume 31). Botanical Garden and Botanical Museum Berlin-Dahlem / Hellenic Botanical Society, Berlin / Athens 2013, ISBN 978-3-921800-88-1 , p. 93.
  7. ↑ Arne Strid: Cytisus. In: Arne Strid (Ed.): Mountain Flora of Greece. Volume One . Cambridge University Press, Cambridge u. a. 1986, ISBN 0-521-25737-9 , pp. 447 ( limited preview in Google Book search).

Web links

Commons : Niederliegender Geißklee ( Cytisus decumbens )  - Album with pictures, videos and audio files