Vine Maple - Acer circinatum

A different maple tree on the property. These are lining the creek, sometimes in thick bunches of mossy undergrowth. They bend over and don't go up tall or erect. Creeky maply plants. I'm not 100% sure that's what it is, without seeing the flower or fruit, but I think so. If I'm right, these will be turning bright red down by the creek in the fall. Should be magical!

http://biology.burke.washington.edu/herbarium/imagecollection.php?ID=1