A NOTE ABOUT MAPLES IN THE USA
both sides of a sample plank of bigtooth maple / Acer grandidentatum var. sinuosu --- HUGE enlargements are present. This sample was loaned to me by Mark Peet whom I thank for this and other contributions to the site. Acer grandidentatum is a synonym for Acer saccharum. Mark tells me the dark streaks are most likely tapwood (that is, this tree has been tapped for maple sugar and the metal in the taps causes dark streaks in the wood). The second face is light because, I think, it is getting the dark tap-related color only in the upper right.
end grain and end grain closeup of the piece directly above
END GRAIN UPDATE from directly above