Bellis perennis

Bellis perennis is a very common European species of daisy, of the Asteraceae family, often considered the model type for the name "daisy".
Many related plants also share the name "daisy", so to distinguish this species from other daisies it is sometimes qualified as common daisy, lawn daisy or English daisy. The plant resembles "Leucanthemum vulgare", a similar plant in the same family. "Bellis perennis" is native to western, central and northern Europe, but widely naturalised in most temperate regions including the Americas, and Australasia.
Names.
Linnaeus named the plant species "Bellis perennis" in Sp. Pl. 2: 886. 1753
Description.
It is an low herbaceous perennial plant with short rhizomes and of small rounded or spoon-shaped leaves that are long and grow flat to the ground.
The flower heads are in diameter. Although the 'flower' may appear to consist of a yellow centre with white petals, this is not the case. Each individual "petal" is itself an individual flower; these flowers are called ray flowers. In the centre (the "disk") there are also many tiny yellow flowers; these are called the disk flowers. The different colours and styles of flower work together in order to attract insects. The flower heads are produced on stems without leaves that are tall.
Where it grows.
"Bellis perennis" is native to Northern Africa (Morocco), Southwestern Asia, and Europe; widely introduced and naturalised elsewhere.
The species habitually colonises grasslands, including lawns, and is difficult to eradicate. Wherever it appears it is often considered an invasive weed.
Uses as food.
This daisy may be used as a leaf vegetable. Young leaves can be eaten raw in salads or cooked, noting that the leaves become increasingly astringent with age. Flower buds and petals can be eaten raw in sandwiches, soups and salads. It is also used as a tea and as a vitamin supplement.