The Dandelion is a common yellow wildflower.
Hagrid once offered Harry a cup of dandelion juice when he went to visit him.
Elphias Doge was said to resemble an aged dandelion clock because of his cloud of white hair.
The grounds at Hogwarts School of Witchcraft and Wizardry have dandelions which can be seen from the small ground-level windows of the Hufflepuff common room.
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