some notes from the esteemed Dale Martens. I just came across it and thought I would share. It's a PDF file.
http://www.lsavc.org/final_docs/Martens_note.pdf
Now, there is another excellent tip someone shared with me. On many gesneriads, the pollen is ripe before the stigma is prominent. In other words, you need a younger flower to get the pollen from, and then an older flower with a sticky stigma.
pollinating Streps, Sinns and Episcias
