I've been searching and I believe I have ID'd this as Myrmecophila tibicinis from the pic and description
here on IOSPE.
They are native to this area and the guy I got it from lives out in the country where they are most common. They are pretty common everywhere though, I've seen large ones that look like this (haven't seen the blooms) growing on trees in vacant lots here in the city.
The bloom is so high that I had not sniffed it, after reading the description I got on a chair and yes, it is very fragrant. I have some other pieces of this type of orchid that were blown down in a storm. I've had them on the rock wall in light but shade and now I'm going to move them to a log in the pond which gets full sun about half the day. They won't be in the water but over it, and I can spray them occasionally in the dry season.
It's nice to know more about the plants that I have and that grow in the area.
Here's a pic of the whole group on the wall, the stem is about 4' long. It is at the edge of the terrace with bright light but no direct sun. I don't want to move this one because of the other plants also attached to the wood.