Please ID - huge-leaved vine that is growing like INSANITY
Out of NOWHERE, this vine that I've never seen before on my property (or anywhere else) in 20 years has popped up and is taking over.
Huge leaves, palmate, opposite, now with little spikes of white flowers. It grows up into mature oaks, over rhododendrons and baby cedars, and out across the driveway.
Possible source -- this spring and summer, we had our first-ever Canadian geese on the property, and they liked to hang out right at the origin point of this vine.
Link to photos: Mystery Ivy
Here is a link that might be useful: Link to Photos (if above doesn't work)