The old glass catalogues show jardinieres as often being glass pots rather longer than they were wide. I suspect they were for flower arrangements rather than pots to create the effect of a jardin (garden), though they might also have held small pots. The glass catalogue term may have been a useful description for something that wasn't a vase, but designed for vegetation of some sort. The ebay item might be called a jardiniere but I think that is ebay "licence" at work. If it ain't a bulb vase then it's just a vase.