Location: This quest can be found in Gondolia.
Objective: Find a Mysterious Flower Near Gallopolis
The Desert Rose can be found in the Gallopolis Region. From the city’s entrance, head south to the eastern tip of the peninsula as shown in the image below. You should find a shiny gold object laying on the ground. Pick it up to receive the Desert Rose, then head back to the girl on the east side of Gondolia and give her the flower to complete the quest.
Reward: Happy Hat