unknown 'flat' orchid w/ pitting

[dneafse]

Hello,

I'm relatively new to orchids. I recently received this plant from a friend of mine, who had no idea what it was. Any clues?


In addition, it seems that this orchid has about a dozen very tiny black pits on its leaves.



I've compared the spots to pictures of various fungal and viral infections, as well as to pics of mite damage, and they don't quite match up. I haven't seen any slime trails from slugs or snails. My friend was keeping this orchid in his backyard in S. Florida. Any clues as to what mystery malady is afflicting my mystery orchid? [I considered putting this in the pests & disease forum, but didn't want my first action on this forum to be a double-post ].

Thanks in advance for any insights.

Dan