Rick, no thoughts on that one in particular, really. I haven't seen enough of those totally horizontal to make an association. But I have seen the same kinds of variations in underground character that you show ( and more) with both L. henryi and var. citrinum. I go through quite few young stock of both types here and only save the very best and dispose of the rest. So I've never done any tracking on the varients. But based on the limited digging and moving of offspring derived from my selected good stock, the root structure has been much like the parents--heavy ground feeders, so it can be selected out, But if left alone to nature like in my henryi patch, I've more or less concluded that this underground variation is typical and normal within the species. And that can be a good thing.
It would be interesting to tag the horizontal one and replant it vertical to see if it resumes horizontal orientation.
