Narcissus pseudonarcissus

Narcissus pseudonarcissus, commonly named the wild daffodil or Lent lily (Welsh: Cennin Pedr), is a perennial flowering plant. This species has pale yellow tepals, with a darker central trumpet. The long, narrow leaves are slightly greyish green in colour and rise from the base of the stem. The plant grows from a bulb. The flowers produce seeds which, when germinated, take five to seven years to produce a flowering plant. (Sexual seed reproduction mixes the traits of both parent flowers, so if garden hybrid cultivars are planted close to wild populations of Narcissus pseudonarcissus, there is a danger that the new seedlings, having hybrid vigour, could out-compete the wild plants.)...read more on Wikipedia.