It's readily available in California. What's funny is we usually want something that is not local. I'm a member over at SCAPE in Southern California and a member sells it at pretty good prices. I'll look for his info and post it here for you.
After 50 years I do a lot of things right, but still get things wrong
Looks like that is the same guy that was referred to me earlier in the thread. I believe its PC1. He sent me an email telling me everything he has is on the site. Does not look like he has anything small or like what is in the image in my first post unfortunately. He has all huge branches for long tanks it looks like. I found another place (http://www.manzanita.com/aqwood.html) that I shot an email to, waiting on a response. I also sent an email to Aqua forest aquarium about their "branch wood".
Manzanita is probably your best bet. If you don't want to DIY an arrangement out of several smaller pieces, I'd just keep on searching.
Alternatively (though it might be a little more chaotic-seeming and thinner-diameter than what you're going for), you might want to look into what's being marketed as "twisted rosewood" (e.g., http://www.underwatereco.com/Nuvo-Aq...od-p-5821.html -- don't know how they're splitting up the size classes, but medium might get you branches that clear the water).