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	Senecio jacobaea L.

Fam.: Asteraceae / Composite Fam.

Synon.: Jacobaea vulgaris GAERTN.

Genus: Senecio L., Jacobaea MILL.

Authors:
	L.:	Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
	GAERTN.:	Joseph Gaertner (1732 - 1791), German physician and botanist
	MILL.:	Philip Miller (1691 - 1771), English gardener

Etymology:
	Senecio:	senex = old man (Greek)
	jacobaea:	in flower around the day of Jacobus, the 7th of July
	Jacobaea:	in flower around the day of Jacobus, the 7th of July
	vulgaris:	common

Beside the narrower segments of the upper leaves a good characteristic for distinction between Senecio jacobaea and Senecio erucifolius is that the second outer hull of sepals of Senecio jacobaea is close-fitting to the calyx or not available, while the outer hull of Senecio erucifolius is protruding. Only in rare cases Senecio jacobaea shows a rosette of basal leaves still at blooming time, as it is regularly available at Senecio aquaticus.

Fig. 1: Senecio jacobaea / Common Ragwort
D Deggingen 16.7.2005

Fig. 2: Senecio jacobaea / Common Ragwort
D Altenglan 21.5.2011

Fig. 3: Senecio jacobaea / Common Ragwort
D Altenglan 21.5.2011

Fig. 4: Senecio jacobaea / Common Ragwort
D Pforzheim 22.7.2006

Fig. 5: Senecio jacobaea / Common Ragwort
D Pforzheim 22.7.2006

Senecio jacobaea / Common Ragwort, D Lorsch 5.4.2014

Fig. 6: Senecio jacobaea / Common Ragwort (young plant)
D Lorsch 5.4.2014

Fig. 7: Senecio jacobaea / Common Ragwort
D Ketsch 2.7.2014

Fig. 8: Senecio jacobaea / Common Ragwort
D Mannheim 24.7.2006

Fig. 9: Senecio jacobaea / Common Ragwort
D Mannheim 24.7.2006

Senecio jacobaea / Common Ragwort, D Mannheim 20.7.2006

Fig. 10: Senecio jacobaea / Common Ragwort (lower stem leaf)
D Mannheim 20.7.2006

Fig. 11: Senecio jacobaea / Common Ragwort (medium leaves)
D Mannheim 20.7.2006

Fig. 12: Senecio jacobaea / Common Ragwort (rarely with rosette still at blooming time)
D Mannheim 20.7.2006

Senecio jacobaea / Common Ragwort, D Bochum 9.9.2020

Fig. 13: Senecio jacobaea / Common Ragwort (Rosette)
D Bochum 9.9.2020

Fig. 14: Senecio jacobaea / Common Ragwort (Rosette)
D Bochum 9.9.2020

Fig. 15: Senecio jacobaea / Common Ragwort
D Groß-Gerau 31.8.2009

Fig. 16: Senecio jacobaea / Common Ragwort
D Groß-Gerau 31.8.2009

Fig. 17: Senecio jacobaea / Common Ragwort
D Groß-Gerau 31.8.2009

Fig. 18: Senecio jacobaea / Common Ragwort
D Groß-Gerau 31.8.2009

Fig. 19: Senecio jacobaea / Common Ragwort
D Bad Bergzabern 3.10.2011

Fig. 20: Senecio jacobaea / Common Ragwort
D Bad Bergzabern 3.10.2011

Fig. 21: Senecio jacobaea / Common Ragwort
D Sachsen-Anhalt, Könnern 17.6.2023

Fig. 22: Senecio jacobaea / Common Ragwort
D Sachsen-Anhalt, Könnern 17.6.2023

Fig. 23: Senecio jacobaea / Common Ragwort
A Bad Vöslau 7.7.2023

Fig. 24: Senecio jacobaea / Common Ragwort
A Bad Vöslau 7.7.2023

Fig. 25: Senecio jacobaea / Common Ragwort
A Bad Vöslau 7.7.2023

Fig. 26: Senecio jacobaea / Common Ragwort
A Bad Vöslau 7.7.2023

Fig. 27: Senecio jacobaea / Common Ragwort
A Bad Vöslau 7.7.2023

Fig. 28: Senecio jacobaea / Common Ragwort
A Siegendorf 24.9.2022

Fig. 29: Senecio jacobaea / Common Ragwort
A Siegendorf 24.9.2022

Fig. 30: Senecio jacobaea / Common Ragwort
A Siegendorf 24.9.2022

Fig. 31: Senecio jacobaea / Common Ragwort
A Siegendorf 24.9.2022

Fig. 32: Senecio jacobaea / Common Ragwort
Croatia, Slunj 18.7.2007

Fig. 33: Senecio jacobaea / Common Ragwort
Croatia, Slunj 18.7.2007

Fig. 34: Senecio jacobaea / Common Ragwort
Croatia, Slunj 18.7.2007

Fig. 35: Senecio jacobaea / Common Ragwort
Croatia, Slunj 18.7.2007

Fig. 36: Senecio jacobaea / Common Ragwort
Croatia, Učka 14.7.2007

Fig. 37: Senecio jacobaea / Common Ragwort
Croatia, Učka 14.7.2007

Fig. 38: Senecio jacobaea / Common Ragwort
Croatia, Učka 14.7.2007

Fig. 39: Senecio jacobaea / Common Ragwort
IRL County Galway, Kinvarra 9.8.2005

Senecio jacobaea / Common Ragwort, F Saint-Pierre-d'Oleron 25.7.1986

Fig. 40: Senecio jacobaea / Common Ragwort (with caterpillars of the Cinnabar Moth Tyria jacobaeae L.)
F Saint-Pierre-d'Oleron 25.7.1986

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