Some years ago, some Oph. pendulum volunteered in an Osmunda regallis. When I put them in containers, I assigned a letter to each, in case they were different.
This form is mostly flat, but will curl to an extent. It is around 1+ inch wide.
These are well-established, beautiful plants, on 8″x6″ boards, with long fronds. They should probably be given a larger plaque or basket soon.