The label on the mini vini says: P. dayanum vinicolor x barbigerum. There has been speculation that P. dayanum vinicolor is dayanum x (dayanum x callosum viniverum). This seems reasonable due to the lack of evidence for a naturally occuring population of vinicolor dayanum.
It is a bit more complicated and weird than that...
There has been an original dayanum vinicolor that has been found from wild plants in the Netherlands and died, no progeny.
A couple years later, some people offered flasks of dayanum vinicolor to Klinge, and these are apparently (dayanum x a vinicolor maudiae type) x dayanum, or something similar. Some of them are really beautiful in their own. But they are as well quite 'stable'.
Their progeny is clearly hybrid, but all of the selfings from those plants are vinicolor, where we would expect a percentage to be coloratums. They never, ever do.
Anyway, the 'dayanum vinicolor' in the trade were hybrids, that's clear, but apparently from a much older breeding program where the lines were stabilized. With what species, and how, we don't know. It is interesting to know too that it is the same people behind this hybrids, who got one of the first vinicolor callosum (and sold it to Norris Powell), which puts a lot of question as to what all of those plants are, wild things, hybrids from a very old plant now dead of something else, or whatever...
Similarly, there has been at least twice a lawrenceanum 'vinicolor', that have been lost, once in Linden nurseries at the turn of the century, now dead, and a second time a couple of years ago, dead. The dorsal is just dark burgundy...
Last, I am sure that your plant is dayanum vinicolor x helenae, because Klinge did that cross, and some looked pretty similar... He did not do dayanum vini x coccineum. However he got in trouble, because some people attacked the fact he had helenae crosses, plus he wanted to export to countries where helenae was prohibited. So his plants were tagged dayanum vinicolor x barbigerum v.h. ( v.h. for var. helenae...).
:drool:
