Just a little info on terminology: if a man made hybrid, then both the genus and the species names are written with a capital, first letter. In casu: Paphiopedilum Vexillarium.
Naturally occuring hybrids are designated as in the following examples: Paphiopedilum x lushuiense (spicerianum x villosum, Paphiopedilum x wenshanense (concolor x bellatulum), Paphiopedilum x vietenryanum (henryanum x gratrixianum), and so forth.
But beware the latter principle is only applied to verified, naturally occuring hybrids - manmade hybrids of the same croses bear respectively the name Paphiopedilum Lathamianum (x lushuiense), P. Concobellatulum (x wenshanense), and the Perners (Hengduan Biotechnology) made a manmade replica with a twist of the last cross, P. New Vietenryanum (henryanum x gratrixianum var. daoense).
This of course raises the question of how to distinguish between plants, that are manmade and natural hybrids? Well, I think, in (almost?) most cases you can't, that is unless you have clearcut evidence of proveniens. Nobody said it should be easy to be a hobby-orchidist!
