Rhyncholaelia glauca with dark patch on rhizome.

[BrassavolaStars]

Hello all,

I thought that I was done with rot after putting the orchids in the greenhouse but alas, I may be wrong.

While I was repotting my Rhy. glauca I noticed it has a dark region on the rhizome. I am worried it may be rot. It’s on the older part of the rhizome. Is it rot? What should I do? The area isn’t too soft, but a finger nail can go through it a bit.