Growing in profusion in a grassy field
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flower certainly bulbosa but the leaves look like acris - are you sure they are the same plant?
Well, pretty sure, and all the vast number of flowers I saw were bulbosa, but I guess I can't be 100% sure 4 days later. I take the point that the leaves are more finely divided than you would expect for bulbosa. The pictures were taken in the same place 30 seconds apart.
Lat/Lng: 51.3785, 0.4565
OS grid ref: TQ710672