Brown mustard (Brassica juncea) https://en.wikipedia.org/wiki/Brassica_juncea
Brown mustard, Arakawa River, Kofu, Yamanashi, 5/08/2025
Lesser Trefoil (Trifolium dubium) https://en.wikipedia.org/wiki/Trifolium_dubium; https://plants.ces.ncsu.edu/plants/trifolium-dubium/
Lesser Trefoil, Arakawa River, Kofu, Yamanashi, 5/08/2025