Dendrobium section latourea

[Intruder]

I am looking for a division of a dendrobium section latourea hybrid like Wonder Nishii, Green Elfe or Den. johnsoniae x convolutum. Anyone knows where I can get one from anyone who ships out of the US? Many thanks for your informations.
NB:seeds of one or other of these hybrids will be also a good alternative.
Many thanks in advance;