At first I thought this was parasitica, but it blooms from a pendicule not at the nodes.
Then I started thinking rosea...maybe?.Thoughts ?
Bloom is very tiny...less than 1/4 the size of a pencil eraser if that.
Growth habit is twining, climbing then hangs when the stems get heavy then turn and climb back up on itself.
Dee, they get anywhere from shade to a bit of direct sun. They are under the Oak Trees..where the light changed throughout the day. I fertilize with the same bloom fertilizer I use for the Orchids and Hoya's.