Marsh Ragwort - Jacobaea aquatica

Description

Stems often branched in the lower part. Basal leaves often unlobed. Flowerheads yellow, 25 to 30 mm, with 12 to 15 rays and borne in loose flat topped clusters. Bracts not black tipped.

Similar Species

Common Ragwort (Senecio jacobaea (= syn. Jacobaea vulgaris).  Oxford Ragwort and Hoary Ragwort are also similar, but grow in different habitats

Identification difficulty
ID guidance

Looser habit and corymbs than Common Ragwort; terminal lobe of leaves much larger than lateral lobes.  Bracts are not black-tipped

Recording advice

Photograph of the plant in habitat, showing leaves as well as flowers.  It is not possible to verify the species form photos of the flowers alone

Habitat

Ditches, water margins, damp and marshy places.

When to see it

July and August.

Life History

Biennial.

UK Status

Widespread and frequent in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 124 of the 617 tetrads.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map