Mini Star Space
From the Super Mario Wiki
A Mini Star Space is a rare space found only in Mario Party 9. Whenever a Captain lands on this space, he or she will receive the amount of Mini Stars as shown by the number on the space that the Captain lands on. The number shown on the space can be either 1, 2, 3, or 5.
These spaces generally appear whenever the player lands on a Lucky Space next to a Warp Pipe. However, they also appear on Toad Road, and can be landed upon if the player manages to roll at least a 16 to cross the gap between the mountains.