This photograph shows the lopsided development that is common to Silver Maples, which often abort one wing of their samaras. I’m not sure about the red coloring. Maybe it’s common to Silver Maples and I haven’t noticed. It’s also true that Silver Maples and Red Maples hybridize fairly often, and this tree down by the Rivanna might be the result. I’m not having much luck finding info on the development of maple seeds, which seems odd, as common as they are. If you know of anything, or come across something good, please let me know. Right now I’m just watching and trying to learn.
-Tony Russell