I'm wondering what you members think or if there is a record, on the tallest Cattleya species known(without spike). I've seen quite a few impressive specimens of Cats. reaching +20'' attached to gorgeous grasping root systems. Which i think of as very attractive
leopoldii/tigrina - I've seen pics of some taller than a young child.
Some guttata can also get very tall. I've bought 2 in years past and both grew bigger than I could accommodate under lights but I keep looking for one of the shorter plants.