Recently, I had some fun with a famous old grex that a lot of people may have in their collection. I was researching the origin of Paphiopedilum Lady Isabel (P. rothschildianum x stonei), trying to determine who the name referred to. The information that I found suggested that the grex name has been commonly misspelled for more than a century. I contacted Julian Shaw, the Orchid Registrar at RHS, to see what he thought. After some additional research, he agreed. The correct name for this grex is Paphiopedilum Lady Isobel, and the hybrid register has been updated to correct the spelling. Details in a blog post that I wrote.