Yippee: we find some Rue-Leaved Saxifrage growing on the Thames Path

After finding a few Rue-Leaved Saxifrage plants flowering beside the Lesnes Abbey' Ruins (a well documented population) we were both surprised and pleased to find some plants, some flowering, growing on the Thames Path in the Belvedere area (Grid Reference: TQ 50809 79951 or thereabouts) viz.

There were sixty-plus plants growing on dirt and moss; a somewhat precarious toe-hold on existence.