Giant Flower

From the Super Mario Wiki
Donkey Kong grabbing a Giant Flower

Giant Flower is an object used in various levels of DK: Jungle Climber. Once Donkey Kong grabs a Giant Flower with both hands, the plant will bend back and proceed to snap back to its rightful position quickly, flinging Donkey Kong through the air in the process. This is the only way to get some secret coins, bananas and other items of the game. Giant Flower appears first in the level 1-3, "Jungle Beach".