I just discovered this on an old pseudobulb of my Cattleya maxima. She has never flowered for me yet. Se has a very big strong new growth that I hope will give a sheath one of these days. I could swear this growth wasn't there a few days ago. Any idea of what it could be? Could it be a spike?
If you grow a large number of Catts, you will eventually have one or two. I've had Catts with multiple leads have a sheath but the next growth over will send out a spike with no sheath.