Evan,
I'm not aware of any of this work going on, but that doesn't mean that someone is not doing it. Were I located in a northern climate, I would be doing the work myself! I've already done some hybridization with Typhonium, and if Arisaema is similar, the pistils are receptive once the bloom first opens, and the pollen drops the next day. If you have a number of specimens blooming during the same time period, you can try this yourself. Pollen can be collected and saved in the refrigerator for a day or two if you need to wait for a bloom to open.
LariAnn
