WHAT HAPPENS WHEN YOU CROSS A CRABAPPLE WITH AN OAK? You get a photo like the one above (if not an actual intergeneric hybrid tree). This wind-borne balancing act didn’t register at first when I spied it the other day, but then I whipped my head back around and had a good smile, and a snapshot. What would you call such a freakish genetic combination of crabapple (Malus) and oak (Quercus) if it did actually exist? A croak?