A possible seed dispersal mechanism for Banksia integrifolia in urban areas

Okay... I gotta say this is possibly my most speculative, unhinged post to date. But here we go: I was in the beachy suburbs of Melbourne, where I stumbled upon a Banksia integrifolia aka Coastal Banksia dropping its flowers into the gutter, as such: In the photo above you can see the parent tree (the source of these flowers) and the nearby street drain. On the parent tree you can also make out…