Geropogon hybridus

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Geropogon hybridus
Goat's Beard.jpg

Geropogon hybridus

Systematics
Order : Astern-like (Asterales)
Family : Daisy family (Asteraceae)
Subfamily : Cichorioideae
Tribe : Cichorieae
Genre : Geropogon
Type : Geropogon hybridus
Scientific name of the  genus
Geropogon
L.
Scientific name of the  species
Geropogon hybridus
( L. ) Sch.Bip.

Geropogon hybridus is the only plant species of the genus Geropogon within the sunflower family (Asteraceae). In German he is also called the hybrid goat beard .

description

Vegetative characteristics

Geropogon hybridus is an annual herbaceous plant that reaches heights of 20 to 80 centimeters. The leaves are 60 to 80 millimeters long and about 3 millimeters wide.

Generative characteristics

Infructescence: You can clearly see that the fruits at the edge do not have hair, but bristles at the tip.

The flowering period extends from April to July. The flower heads are 30 to 50 millimeters in diameter and have few flowers. The approximately 8 bracts are twice to three times as long as the envelope. The pink to lilac ray florets are shorter than the shell.

The achenes are beaked, the marginal ones with five coarse bristles of unequal length, the others with feathery hair. The beak is shorter than the fruit.

The number of chromosomes is 2n = 12 or 14.

ecology

Geropogon hybridus is a stem therophyte .

Occurrence

Geropogon hybridus is native to the Mediterranean area. In the Canary Islands, Madeira and Porto Santo and in the Crimea, their originality is questionable. Geropogon hybridus grows in olive groves, pastures, fallow land and ruderal sites. On Crete it lives at altitudes from sea level to 850 meters.

Taxonomy

The genus Geropogon was established by Carl von Linné in 1763 . The type species is Geropogon glaber L. The lectotype was established in 1988 (LINN-945.1) by C. Díaz de la Guardia and G. Blanca in El género Geropogon L. (Compositae, Lactuceae). in Lazaroa , Volume 9, 1988, p. 38.

Synonyms for Geropogon hybridus (L.) Sch. Gdp. are Geropogon glaber L. , Geropogon hirsutus L. , Tragopogon hybridus L. , Tragopogon geropogon Rouy nom. illeg., Tragopogon glaber (L.) Hill , Tragopogon hirsutus (L.) Hill .

supporting documents

  1. ↑ a b c d e f Ralf Jahn, Peter Schönfelder: Excursion flora for Crete . With contributions by Alfred Mayer and Martin Scheuerer. Eugen Ulmer, Stuttgart (Hohenheim) 1995, ISBN 3-8001-3478-0 , p. 335 .
  2. ^ A b Peter Schönfelder , Ingrid Schönfelder: The new cosmos Mediterranean flora. Franckh Kosmos Verlag Stuttgart 2008. ISBN 978-3-440-10742-3 . P. 128.
  3. ↑ Geropogon hybridus at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  4. ↑ a b Werner Greuter : Compositae (pro parte majore) : data sheet Geropogon hybridus In: Werner Greuter, Eckhard von Raab-Straube (ed.): Compositae. In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Berlin 2006–2009.
  5. ↑ a b Geropogon at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed July 10, 2016.

literature

  • C. Díaz de la Guardia, G. Blanca: El género Geropogon L. (Compositae, Lactuceae). In: Lazaroa , Volume 9, 1988, pp. 31-44.

Web links

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