Strange looking leaf
I just found out this strange looking broken leaf on a new shoot of my oncidium. This is the one has been giving out ton of roots and not rebloom like some of it's housemates. and now I saw this. Wonder what that is. Looks like there is a leaf with a sheet wrapped around some more new leaves. But it broke off close to the bottom of the shoot and then the new shoot keep growing, pushing that broken leaf out. Could you tell me what it is doing and why it is doing that, There are more new shoots with that kind of wrap around too and I am afraid they might do that and would that harm the plant?