Cowbell
kaiken
Knoll.
Would "knoll" satisfy?
sun flower
Daffodil
daisy
The forget me not is a flower that is blue flower with a small yellow center. It is the common name of the flower and as it name states is given to remind us of something thing or someone.
Cowbell
It is a small white flower with a yellow centre of course.. The most common I can think of is a Daisy. There are a number of 'Daisies' but Bellis perennis (Binomial name) is what you would expect to see in places such as grassy areas.
Aster.
oleander
A yellow flower (:
A buttercup is one such flower. Dandelion is another.
The Indian flower is called a lotus. A pink Flower with a yellow dot inside.
Chrysanthemum or carnation.
Sunflower Sage