風鈴草(フウリンソウ) Canterbury bell

　フウリンソウは上を向いて咲くので、雨が降れば花の中に水が貯まると思います。鹿威しのように時折、お辞儀をして排水しているのでしょうか。

　The flowers bloom facing upwards, so when it rains, water will accumulate inside the flowers. I wonder if they will probably bow at intervals, like a "Shishi-odoshi", to drain the water.

　Shishi-odoshi :

　Originally, it was a device to scare away deer, wild boars, birds, etc. that destroy crops. When water accumulates in the bamboo tube, it tilts due to its weight, and when the water spills, it bounces back and hits the stone, making a sound. 

　It has elegant appearance and the beauty of its sound, so it has come to be incorporated into Japanese gardens, apart from its original purpose.

　 A detailed explanation can be read at the following URL:

https://en.wikipedia.org/wiki/Shishi-odoshi