Amaryllis and Hippeastrums: Unknown griffinia sp., 1 by Carter

Carter wrote:
This is an unknown griffinia species I've been growing for 5 or 6 years now. I've never been able to identify it, though, I've never put much effort into it. I've got much better pics than this one of the flower, but they must all be on my desktop computer at home. It's a pretty easy grower. The leaves are glossy with no spots at all. The color is fairly light green, but I think they need a little better fertilizer than they've been getting (as in, the 0-0-0 kind...). Off the top of my head, I'd guess the flower stalks are maybe 8" to 10" tall, with the leaves being about the same. Each stalk has a number of flowers on it, somewhere round about 5-ish, I think. Upper petals are the bluish-lavender you see in the pic, fading to white or near white on the bottom petals.

Here is the link to Rareflora from whom I originally purchased it:
http://www.rareflora.com/griffiniasp.htm

I was thinking possibly either G. aracensis or (more likely) G. espiritensis?

Thanks!