I have access to cardiocrinum giganteum and am finding the other 2 species nearly impossible to find. By the way, I live in Portland Oregon and will attend local plant sales if someone can identify a carrier.

I found this website 2 months ago. This nursery is in Stanwood, Washington. I don't know if they are near you but found cardiocrinum cordatum. I have never ordered from them. But I think I will be placing my first order with them, they seem to have a lot of rare and unusual plants.

I also purchased cardiocrinum giganteum from Asiatica last fall and it was a good size.
Anyway let me know what you find.