It is an Epimedium sp.
There are many named cultivars.
They love shade.
They can be star shaped or more demure...in all colours, white, pink, yellow, purple, orange, red, blue.
Might be Epimedium Amber Queen.
https://www.google.com/search?...:
Warning...collecting them can become addictive!
I love both the leaves and the flowers.
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