I'd not noticed.

      Remember this, from earlier this month?  What. I'd not noticed, and probably never would had it not been piddling down most of the day.
      I took a "swift" canter (?) out between the drops in search  of Blippery.  While looking at something totally other I noticed that only the paler section of the flowers had vanished.
      Next job - watch carefully to see if the bottom section sets seed; if so it may be not so much Oxford & Cambridge flowers as male and female flowers.  Hopefully, given memory - time will tell.

I'd also not noticed the bit of stray plastic, until on Computer - that'll GO!