Yeah, they're out there. I think it has a lot to do with the conditions where they're grown. I wish mine grew a little more like that instead of a softball sized mass with heads sticking off of it. It's really pretty but I can't frag it.
Run a search concerning strength of water flow and growth patterns of duncans. I seem to remember reading something that stated that higher flow results in the branching patterns, and low flow in the more softball mass growth pattern... could be wrong but I certainly do recall reading something like this.
<a href=showthread.php?s=&postid=14808062#post14808062 target=_blank>Originally posted</a> by szwab Time time and more time. They will sprout heads when fed, but growth like that takes time I believe. I've had mine for a while as well and it has just recently look like it's going to start branching.