Fragaria viridis

About

Fragaria viridis, commonly called creamy strawberry or green strawberry, is a species of strawberry native to Europe and central Asia. It has fruits with fine flavour. They have surprisingly little of the usual strawberry aroma, but a refreshing acidity, and sometimes ripen without becoming red. When they are plucked from the plant, the calyx will usually adhere and they will detach with a noticeable snapping sound.

Summary from Wikipedia