I reply in another thread, Salvator. Responsum alio filo do.
http://discourse.textkit.com/t/playing-cards-in-latin-and-in-your-language/8294/1
I checked Pexenfelder again and he uses the genitive for such as “genus cordis”, and I can’t put my finger on the early 17th-century passage I thought used the ablative, so I will definitely change to genitive.
Locum in quo casu ablativo familae chartularum ostenduntur invenire non possum. Fortassè id malè memoriâ teneo, quià verò Pexenfelderus casu genitivo scribit, et perperàm aliter credi.