A Mayflower is a shrub belonging to the Ericaceae family. It is the symbol of Massachusetts, where Ilvermorny School of Witchcraft and Wizardry is located. Every year, on the anniversary of Isolt Sayre's death, William the Pukwudgie places these flowers on her grave. Isolt had travelled over to the New World on the boat named the Mayflower.
- Pottermore (First appearance)