Clarke,
Taking leaf cuttings from Cephalotus is like falling of a log!
Use the non carnivorous leaves (yes you are supposed to be able to use the
pitchers as wel but I've never had one root). Push the petiole into some
fresh compost so that the petiole is covered and leave. It can be a slow
process. The cutting can form roots but take ages to to put any top growth
up. Bottom heat can help but if you take the cutting too late it will only
make things worse.
-- Phil Wilson (cp@pwilson.demon.co.uk)