Well in image 2, you have a new root tip growing just back from the old growing tip that was damaged some how. Once damaged the roots can branch.
Image one is a normal tip of a pseudobulb. With maturity a sheath will form here prior to blooming.
There are some Cattleyas that do bloom from this pseudobulb tip. That blooming happens more often in mini-Catts then the standard types. Not all Catts bloom from a sheath.
Images 3 and 4 are in so tight that I can not tell what I am suppose to look at.
