Ugh!
Actually, now that I have looked at my photos, I think I know my answer, but since I took photos, more opinions don't hurt ...
When I was just eyeballing the cut rhizome, the purple ring seemed thin and subtle, so I wasn't sure if it was fusarium, or if I have fusarium paranoia ...
But it does seem fairly clear, especially in the photo I used zoom and flash
So, give me your opinions, please? I do suspect this is going in the trash, and trash gets picked up early tomorrow ...