Goldilocks Buttercup aggregate (Ranunculus auricomus agg.)

Description:
This is a group (agg.) with several subspecies that non-experts find difficult to distinguish between. All are considered rare and poorly studied in our region.
Their common feature is round to kidney-shaped basal leaves and stem leaves divided to the base into more or less narrow segments. Their fruit is short-hairy.

Description contributed by user malenka.

Flowers are not reviewed by experts/botanists, so errors are possible.