Hi!
this is just a little bump!
I've seen that there are still many growers - especially from the tropics - calling their plants "tiger Suratthani" and "Viking". Again, here is a simple summary, hope it helps:
N. "viking", globosa and "Trang bizarre" (these names have never been published) are all the same plant, that now has the official name N. mirabilis var. globosa.
N. "tiger suratthani" = N. suratensis
N. "tiger Songhkla" = N. kongkandana
N. "tiger Trat" = N. kampotiana
The other new species, N. chang and N. kerrii, are rare on the western market, and absent on the SE Asian market. Whenever they are for sale, anyway, they are sold with the right name because the seeds came from me
More info (and wikipedia links) here:
www.marcellocatalano.com/indochina.html