Robuta

https://www.rhs.org.uk/plants/73869/ranunculus-acris-subsp-acris-stevenii/details Ranunculus acris subsp. acris 'Stevenii' | meadow buttercup 'Stevenii' Herbaceous Perennial/RHS ranunculus acris meadow buttercup herbaceous perennial subsp rhs https://www.gardenersworld.com/plants/ranunculus-acris/ Ranunculus acris | BBC Gardeners World Magazine Plant profile of Ranunculus acris on gardenersworld.com bbc gardeners world ranunculus acris magazine https://www.rhs.org.uk/plants/64389/ranunculus-acris-flore-pleno-d/details Ranunculus acris 'Flore Pleno' (d) | double meadow buttercup Herbaceous Perennial/RHS ranunculus acris flore pleno meadow buttercup herbaceous perennial