serpentilingua
labukensis
laycockii
denevei

in your searching you may also come across plants labeled as thorntonii.
This has been determined to be the natural hybrid (serpentilingua x denevei)
AKA Ppls. Sunny in registration, but it does exist in the wild along with
the other four and is worth possessing...

Good luck on your shopping spree...
I managed to acquire all of the above from a combination of RF Orchids and
Dowery Orchids

"Gene Schurg" wrote in message
news
My new favorite orchid (at least for now) is the Paraphalaenopsis. I
purchased labukensis last winter and lost the laycockii (never took root).
I bought the crosses that RF Orchids were selling.

I would like to have all 4 species. Does anyone know of a source for
these
interesting plants?

Thanks,
Gene