Ranunculus acris L., Sp. Pl.: 554 (1753);
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Greenland, Europe to Russian Far East, Aleutian Islands as per POWO;
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SK 3527 30 May 2022: 5 very high res. images.

Location: Kew, London, UK
Altitude: 19 m.
Date: 04 April 2022
Habit : Wild
Ranunculus auricomus L. ??

I think it looks different.
Pl. see
https://www.researchgate.Ranunculusauricomuscomplex


Ranunculus auricomus.. Common name Goldilocks buttercup…see below
Calyx not hairy.
This was at Kew But this was Kew, where anything is possible.
However it does not seem to be in a bed, but growing wild.
It is not Ranunculus repens… creeping buttercup.
But the  hairy calyx  on our meadow buttercup,  Ranunculus acris looks to be a good match.
Do please take a few mins to look at the amazing work of Brian Johnson from Canada.
I have admired his  incredible images for many years.
http://www.microscopy-uk.org.uk/bj-ThreeButtercups.html

 

 

 


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References:
POWO Catalogue of Life
http://www.microscopy-uk.org.uk/ThreeButtercups.html
http://www.friendsoffarnhampark.buttercup/meadowbuttercup.html
https://identify.plantnet.org/weurope/observations/1010184749
https://candide.com/ZA/plants/12ec3832-5e91-4df6-a379-379e8ffefaee