Particular part of a cattleya flower - name for it

[SouthPark]

Hello! Does anyone happen to know if there is a name for this particular part of a cattleya type flower with the red arrow pointing to it? I know it is a part of the labellum/lip.

I wonder if there is a specific name for it ..... so that I can use the name in discussions.

In some photos of cattleya type flowers, that particular part is unfurled. In other photos, that part is still rolled up (as it is in this photo here). I was just trying to find a name for that part - just so that it can be referred to sometimes. Or just some terminology to describe the state of this part --- ie. that part unfurled (unrolled), or that part rolled up.

Thanks in advance for any details!

The pic below is a freely useable one from the internet. From Cattleya Orchid Flower - Free photo on Pixabay