Corn marigold of Myconos
Coleostephus myconis
Family · Asteraceae · Harmless
The entirely yellow daisy, rays and disc alike, that paints cornfields, fallow land and verges across the country between April and June. It is among Portugal's most seen flowers and was missing from this base.
Fields and pasture · Roadsides and waste ground · Town and roadside · Montado
Also known asyellow daisy, coleostephus
How to tell it
A smooth hairless plant, twenty to sixty centimetres. Fleshy spoon-shaped leaves, coarsely toothed, clasping the stem with two ears. Solitary heads two to four centimetres, rays and disc the same yellow, with a ring of bracts with a dark membranous margin beneath.
What it is confused with
Crown daisy
Glebionis coronaria
Both are yellow and of the fields. Crown daisy has leaves twice divided into fine strips; this has entire, merely toothed, fleshy leaves clasping the stem. Neither is dangerous.
Open sheet →What it is for
No use. It indicates acid soil and cultivated or recently abandoned fields, and a yellow cornfield in May is nearly always this plant rather than corn marigold.