The Mushroom

Walking on Scout Scar in a dry spell between showers. This unidentified greeny yellow wild flower ( not the dandelions) was very attractive to bees . I thought they were flies because they were black,  but closer examination showed them to be very furry, definitely bees. And sorry none in this shot. 
The Mushroom is the view point ,  a memorial shelter to George V built in 1912. Flowers entered for Flower Friday - someone might know what they are