I did some research and even though it is not yet registered with the
AOS I think it may originate in Thailand, probably seeded in the DR.
Most likely it is a Dendrobium lowesii but it could be also a Den. costafarmensis. Although some may regard it at the same species...
anyway it is a great bloom and I would just enjoy and not worry. How much did you pay for it? most likely less than some cut flowers at Publix.
What orchids do they have on sale at Lowes / HD down there in florida? if you see some Vanda / Catt alliances for a couple of bucks maybe you could grab one or 2 for meand I would pay shipping and trade something!
Here they do not have so much on sale!