I have a Dendrobium Hybrid that has randomly flowered. It is in a 50mm pot and has NOID. It has put out two spikes with around 8 flowers in total. Here is a picture of one.
Might have some D. speciosium and D. tetragonum (source of the red) in it , among other things. If it were in my yard, it would have lots of company this time of year. But if it is in that group, it is a bit confused about the season in your part of the world.