Chickweed today, filling a pavement garden on Linneausparkweg.

Also a mystery tuber which was floating past me as I stood waiting for Sinterklaas and his flotilla of boats, alongside the Amstel river today. It could be Reed  mace (Cats tails), which is edible in theory. However, it’s easy to tell that harvesting from somewhere as well used as the Amstel, is bound to
lead to digestive troubles at least!