バラ (?)
茨城県

A point on the running track in the garden surrounding the Imperial Palace in Tokyo.
The signs are at a distance of 100 meters from each other, so you can easily determine the desired running time.
Each sign is dedicated to one of Japan’s 47 prefectures.
Each sign shows the name of the district, a typical plant of the district, and its drawing.
The route is also known as the "Circle of Flowers"

The current sign is dedicated to the Ibaraki prefecture located on the island of Honshu, and the plant that appears on the sign (Rose) is the flower that represents the prefecture

Translation of the text on the sign:
バラ - Rose (The name is not clear, but it is clear that the flower is a rose, which is also used as a flower representing the district)
茨城県 - Ibaraki Prefecture