Evan,
The silver veining in my trilobatum crosses comes from a T. varians hybrid done by John Banta. His hybrid had silver veins and dark red spots. I got quite a range of variation from my trilobatum addition to the mix.
For the record, I have another Sauromatum that has green blooms and velvety palmate leaves. It blooms after the leaves are already out, and sends up several blooms throughout the summer, making it seem like an intermediate between Sauromatum and Typhonium. It is a smaller grower than S. venosum, but it will be in the hybridization program come Spring. I'll sure try it with S. giganteum to see what comes out of it.
LariAnn
