Leaf or Sheath on Potinara Island Girl?

[GardenTheater]

I have 3 totally nube questions here and greatly appreciate your advice.

1. In the attached photo, is the 1-inch growth in the center of the leaf, another leaf or a sheath?

2. Do Potinaras usually send up sheaths or do the buds just kind of pop out and get bigger?

3. Does anyone have a photo of what new buds on Potinaras look like in the very early stages?

The photo is a Potinara 'Island Girl' (Little Toshie 'Gold Country AM/AOS x BLC Goldenzelle 'High Nooon') It's a new cross.

Thanks again for your help!!!

Signed: Totally Anxious Nube