Contact these people:

I have no idea whether they have it or not, but I have gotten a couple of brugs from them.

Here is a link that might be useful: Sommer Gardens

Grassy Knoll Exotics has sold the Strybing vulsa (vulcanicola x sanguinea hybrid) in the recent past. She may have other clones as well. It would be well worth asking.

Hanging Gardens nursery in San Francisco/Pacifica (I think they are located in both places) has sold the Zunac plants at shows and to a few individuals. They may or may not have it, but it's worth a try.

A couple of the individuals who posted early pictures of the Zunac plants have sold them in the past. You might want to dig through old posts and contact them privatetly.

I used to grow a Zunac plant (unbloomed) and the Strybing vulsa at my previous location, but do not grow them now.