Forum:Red-Eyes Darkness Metal Dragon's SS effect

This has been baffling me for quite some time. The text of REDMD states "You can remove from play 1 Dragon-Type monster you control to Special Summon this card. Once per turn, you can Special Summon 1 Dragon-Type monster, except "Red-Eyes Darkness Metal Dragon", from your hand or Graveyard."

Now the issue that I am having is that the SS effect does not state where it can be SS'd from. Can this monster be SS'd from the grave? If not please explain why this cannot happen.