I think it is a dendrobium.
Last year it put out some aerial roots that I thought were a bloom spike. I finally figured out these were roots despite their notion to grow upward along the sides of the glass.
This morning I discovered a bloom spike,
as evidenced by the bright green color, a
little mitten shape at the end and
joints along the stem.
Let's take a closer look: grey-green are roots. Bright green mitten has buds.
I wonder if the trigger was when I moved it from the east window over to
join the pothos that gets afternoon sun from a west window? I wonder if it
helped when I poured in several ounces of water and then took it outside
and drained off the water?
The indoor plants I have are on this enclosed porch: a palm, pothos and
spathiphyllum. Amaryllis and such rotate in and out. when they are in bloom.
Yesterday I added two orchids on a whim since this one was not
blooming and orchids were on sale at Home Depot.
I wonder how to get the water spots off the glass caused by my misting?