Dendrobium Delicatum is incorrect and not listed in OrchidWiz. The same is true for Dendrobium x Delicatum. Dendrobium delicatum is listed but the preferred name is Dendrobium x delicatum which means it is a naturally occurring hybrid and treated as a species. As far as the cross you refer to, Den. tarberi has been changed to Den. speciosum. When I run the search for that cross I get: Dendrobium Specio-kingianum (Dendrobium kingianum x Dendrobium speciosum). I am not finding any conflect with what I wrote.
Jim
