Would "dendropenicologist" sound like someone who collects sex toys? Dunno, Penny; but that's not as bad as eta and zmjezhd saying the collectors ought to be called penisologists!
P.S.--I wonder if morrisol will ever come back to see if his question has been answered. Welcome if you do, sir. (No, I don't know the gender for sure; just sounds male to me.)
Nice to see you back again, Penny!