Robin’s Pin Cushion is a gall found on Common Dog Rose (Rosa canina)
It is caused by the Bedeguar Wasp (Diplolepis rosae)
Several larvae overwinter in the gall, each in their own chamber.
This one I spotted in Elland

Earlier in the day
Steve and I went to look for the Sea Campion (Silene uniflora) in Godley Cutting.

A native of cliffs, it is quite at home on the steep sides of the cutting.

Then in the afternoon I came across this Bladder Campion (Silene vulgaris) on the tow-path.

I’ve recently found other interesting Silene species while surveying North Loop.
Small-flowered Catch-fly (Silene gallica var anglica)
Night-flowering Catchfly (Silene noctiflora)
The petals curl in during the day.
And just for good measure here is the Hybrid of Red and White Campion
Occasionally found where the two species grow together.
(Silene latifolia x dioica = S. x hampeana)