These are flowers of Agrimonia pilosa, also known as hairy agrimony. I saw them around the Hyotan (meaning gourd) Pond at the Institute for Nature Study in Tokyo. Their bright yellow caught my eye.
Hairy agrimony fruits are thorny (3rd photo). They stick to passing animals to be dispersed. Maybe because of that, in Japan, the plant symbolizes clinginess.
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| Agrimonia pilosa 金水引 |
