1.  Judas tree:  said to be the tree from which Judas hung himself.  The pink buds on the bare branches being his blood [Ilminster, Somerset, May 2015].

2.  If you stand under a Judas tree and tell a lie you will drop down dead … given to me by a couple of people in a party that I was taking round our gardens, so regretfully I didn’t get the geographical source [Barsham, Suffolk, May 2002].

Images: cultivated, Royal Botanic Gardens, Kew, London Borough of Richmond upon Thames, May 2015.