It’s Philippine Lime
We simply call it kalamansi and it is so useful in the kitchen. My two kalamansi shrubs are flowering again. Actually, they bear fruits nonstop so we have a steady supply which we use in the kitchen. My son loves kalamansi juice so when it is in season we always have a jug of it cooling in the ref.
This is a kalamansi flower, a dainty bloom with citrus scent.