By Mickatkinson
West Yorkshire,
United Kingdom 
Photo added to yesterdays question
22 May, 2017
Answers
Many of the larger "beefsteak" style tomatoes produce flowers of this type.
22 May, 2017
yes that's what I thought when I read your previous question about 20 mins ago.
22 May, 2017
Bit hard to see, but to me it looks fasciated. This is when a stem or a bud is damaged and the tissue fuses together to produce a thickened stem. Not a genetic problem.
22 May, 2017