Good luck!
If you haven't already found the Pacific Bulb Society, try there. They have an email list which you could post your question to and if there are any bulbs out there this would be your best bet.
If that doesn't work you may have to go to South America yourself......
I'm sure you know you left an 'h' out of your spelling for Chlidanthus, just wanted to point it out in case anyone else was looking.

Here is a link that might be useful: Pacific bulb email list

Thank you Kato.
I know PBS, I am already a member, but they cannot help me.
Yes, indeed, coming by myself to South America, but I think it is not going to happen.
still thank you for your recation