Continue upward. There's an item and a save point on the right; make sure to save.
After saving, head into the cave on the left to find a purple item.
Inside the cave, turn right to find another item.
Go all the way to the end, slide down the wall, and you'll find another save point.
To the right of the save point, there are two more items and a Memory Flower.
This Memory Flower is "Monster" Memory Flower #3.
