A plant with pinnately divided leaves and very narrow leaf segments. The inflorescence is a compound umbel with few or no bracts and bracteoles. There are no sepals and the petals are yellow.

Often coastal but also on waste ground and roadside verges inland.

July to October.

Biennial and perennial herb.

Widespread but local in England, mainly coastal elsewhere in Britain.

Local in Leicestershire and Rutland as a casual or established escape. In the Flora of Leicestershire (Primavesi and Evans 1988) it was found in 17 of the 617 tetrads.

In the current Checklist (Jeeves, 2011) it is listed as Alien (archaeophyte) rare.  

It was on the 2011 VC55 Rare Plant Register (Jeeves, 2011) but does not meet the criteria for the current RPR (Hall and Woodward, 2022)