Label is probably saying it is an Odontoglossum or more like an odontoglossum, and the Oncidium part is there to let you know that you should treat it like any other oncidium. I tend to use the term 'Oncidium intergeneric'. I'm not an oncidinae expert, but seems to me that tribe is getting smashed around like cattleya, I wouldn't count on any name being 'correct', at least according to the new RHS registration nomenclature.
There is some significance to the order in which the cross is made in a biological sense, but not in a nomenclature sense. Some characteristics are transmitted by the pod parent (the first, if labelled correctly) and some by the pollen parent. You will get different results if you switch them around. Sometimes you can tell the difference, sometimes you can't. Regardless, the name stays the same. Same thing with other crosses. Paph. lawrencianum x Paph. callosum = Paph Maudiae. Paph callosum x lawrencianum = Maudiae. For some idiotic reason, Paph. Maudiae x Paph. Maudiae = Paph. Maudiae, although even the most basic understanding of genetics makes that a laughable concept. That is an artifact of the registration system we use, RHS is what it is and it isn't changing any time soon. Which is good, I suppose, nice to know that at least one thing is constant in life.
Some things push my buttons... *grin*
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