Cattleya Stem Bruising

[jje10001]

I recently received this piece of a cattleya that was dehydrated, had no roots, and a rather soft and flimsy new growth. This new growth was pliable and wrinkly all over, and could not physically support itself.

After washing off the plant with a physan solution and wiping off the plant, the creases on the the newest growth darkened.




I left the plant overnight, and it seems like the stem has continued to darken. My suspicion is that the area has gotten bruised.



What should I do next for 1.) dealing with the damage on the newest growth (i.e. expectations for its health), and 2.) the overall recovery of the plant.

The base has already been soaked in kelp solution, so I was thinking of just potting the plant up in sphagnum in a clay pot, and leaving it to be, monitoring the stem for any further spread of the dark patch. If the dark spot spreads further, I will cut the bulb off to preserve the eyes at the base.

I was considering a humidity chamber, but I feel like the newest growth is especially succeptible to any further infections.