.... I have a plant that I bought as B. nodosa. It is a fully grown plant,
I've had it for several years, but it has never flowered. It looks very
healthy.

Other nodosas I have seen have been much bigger. Is there clones that are
smaller? Have I bought some hybrid? Does smaller clones have other
culture-needs, do they differ in any other way I should know?
Which size are your Brassavolas (ahem...)?

Mine has leaves 15-20 cm long, and maybe half a cm in diameter. Others I
have seen has had leaves 30-40 cm, with a diameter of up to one cm.

//Via