I noticed that there are Fringecups (Tellima grandiflora) growing all along the river bank of the Calder from Tenterfields to Copley.
They seem to always grow with the similar Pick-a-back-plant  (Tolmiea menziesii)
I also spotted a rare plant, probably also a garden escape, Perfoliate Alexanders (Smyrnium perfoliatum) which I have now seen at three spots along this stretch of the Calder.