It's called clubs in English. The others are hearts, diamonds and spades.
EDIT:
The OED reports:
II In cards.
8 pl. The cards forming one of the four suits, distinguished by the conventional representation of a trefoil leaf in black; in sing. a club-card, a card of this suit.
[A translation of the Spanish name basto, or It. bastone (see basto, baston), the ‘club’ figured on Spanish cards. The current English figure is taken from the French, where the name is trèfle, trefoil.]
So, although the symbol comes from French cards, where it represents a trefoil (although wrongly recognized as a flower in Italian), the name comes from the equivalent in Italian/Spanish cards.