Split-leaved dandelion

Split-leaved dandelion
	Slit- leaved dandelion ( Taraxacum lacistophyllum )
Systematics
Order :	Astern-like (Asterales)
Family :	Daisy family (Asteraceae)
Subfamily :	Cichorioideae
Tribe :	Cichorieae
Genre :	Dandelion ( taraxacum )
Type :	Split-leaved dandelion
Scientific name
	Taraxacum lacistophyllum
	( Dahlst. ) Raunk.

The slit-leaved dandelion ( Taraxacum lacistophyllum ) is a species of the genus dandelion ( Taraxacum ) within the sunflower family (Asteraceae).

description

Fruit cluster

Vegetative characteristics

The split-leaved dandelion grows as a perennial herbaceous plant .

The leaves are arranged in basal rosettes and are divided into a petiole and a leaf blade. The slit-leaved dandelion has narrow to broad, more or less purple petioles. The more or less light green leaf blade is lobed. The leaf side lobes are usually crescent-shaped and toothed.

Generative characteristics

The flowering period extends from mid to late April, and a little earlier in warmer years. The flowers stand together in flower heads. The outer bracts are narrow, egg-lanceolate to lanceolate, long, almost flat to protruding-bent and narrow, clearly white-edged, above often purple, thickened to horned (= calluses). The flowers are light yellow. The stigma is greenish, with pollen.

An important distinguishing feature of calluses dandelions are the achenes , which are red-brown in Taraxacum lacistophyllum . In Baden-Württemberg there are also types with red achenes, the leaf shape of which is closer to Taraxacum lacistophyllum , but also to Taraxacum rubicundum .

The number of chromosomes is 2n = 24.

Habitat : Upper edge of the vineyard with split-leaved dandelions

Occurrence

Distribution in Germany

The Schlitzblättrige dandelion occurs widespread to absent-minded throughout Germany and is the most common type of the callus dandelion section of the Federal Republic.

Location requirements

The slit-leaved dandelion grows in Germany on dry roadsides and roadsides, in sheep pastures and semi- arid grasslands , but also in vineyards. In addition to basic, it also colonizes more or less acidic soils .

Systematics

It was first described in 1905 as a subspecies under the name ( Basionym ) Taraxacum erythrospermum subsp. lacistophyllum by the Swedish botanist Gustav Adolf Hugo Dahlstedt (1856–1934) in Om skandinavaviska Taraxacum-former. In: Bot. Not. No. 3. The rank of a species Taraxacum lacistophyllum (Dahlst.) Raunk. received it in 1906 from Christen Christiansen Raunkiaer (1860–1938).

The species Taraxacum lacistophyllum belongs to the section of calluses dandelions ( Taraxacum sect. Erythrosperma ( H. Lindb .) Dahlst.) In the genus Taraxacum .

literature

Hugo Dahlstedt: Om skandinavaviska Taraxacum-former. In: Bot. Not. No. 3, 1905, pp. 145-172.

Reinhard Doll: The genus Taraxacum , In: Die Neue Brehm Bücherei , No. 473, 1974, 158 pages.

Steffen Hammel: Calluses dandelions (Taraxacum section Erythrosperma) in Baden-Württemberg - Finds 2017 and 2018. In: Jh. Ges. Naturkde. Württemberg , No. 175, Stuttgart, 2019.
Götz Heinrich Loos, Klaus Jung, Arno Wörz: Taraxacum Wiggers 1780, nom. conserv. In: Oskar Sebald, Siegmund Seybold, Georg Pilippi, Arno Wörz (eds.): The ferns and flowers of Baden-Württemberg , Volume 6, Stuttgart (Verlag Eugen Ulmer), 1996: pp. 350-369.
Ingo Uhlemann, Jan Kirschner, Jan Stepanek: Taraxacum , In: Rothmaler: Exkursionsflora von Deutschland - Vascular Plants, Critical Supplementary Volume. 11th edition, Berlin, Heidelberg (Springer Spectrum), 2016, pp. 133-184.

Individual evidence

↑ Thomas Gregor , Ralf Hand , Juraj Paule: Chromosome numbers of fern and flowering plants from Germany 10. In: Kochia , Volume 10, 2017, pp. 45–53.

Web links

Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .