Jacobaea vulgaris [Senecio jacobaea] Gaertner 1791 (Family Asteraceae)


Plant

Leaf

Flower

Fruit

Height: 30-90cm
Arbuscular Mycorrhizal
Biennial, Persistent Seed Bank
Hermaphrodite, Flowering June - October (Earliest: 14.5)

Protective Chemicals
Pyrrolizidine
Alkaloids
Acetylerucifoline, Erucifoline, Integerrimine, Jacobine,
Jacoline, Jaconine, Jacozine, Monocrotaline, Retrorsine,
Senecionine, Seneciphylline, Senecivernine, Spartiodine
Flavonoids Kaempferol
Other Phenolics Clorogenic Acid
Other Acids Fumaric, Malic, Succinic
Benzoquinones Jacaranone

Biotopes:
Meadows
Flower Visitors:
Bombus terrestris

Aphantopus hyperantus

Maniola jurtina

Thymelicus lineola

Cerapteryx graminis

Several Syrphidae

Phaonia angelicae

Eriothrix rufomaculatus

Scathophaga stercoraria

Cynomya mortuorum

Rhagonycha fulva
Seed Dispersal: Wind
Parasites:
Podosphaera fusca

Several Agromyzidae

Ensina sonchi Larva
(Flower Gall)

Stemonocera cornuta

Cheilosia bergenstammi Larva (Root & Stem Miner)

Oedemera virescens Larva (Stem Borer)

Gortyna flavago Larva
(Stem Borer)
Herbivores:
Autographa pulchrina

Polymixis flavicincta

Phragmatobia fuliginosa Larva

Tyria jacobaeae Larva

Phycitodes maritima

Longitarsus ochroleucus
Sapivores:
Eupteryx aurata

Aphis fabae

Aphis jacobaeae
Florivores:
Several Geometridae
Granivores:
Eucosma campoliliana Larva

Ecological Flora of the British Isles
Skye Flora: Ragwort


Pictures © 2003, 2004, 2005 J.K. Lindsey

Caution

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