Seymeria texana

For a bunch of reasons, wild snapdragons are becoming scarce in these parts. This one has always been rare, or else overlooked, and that seems unlikely. It's colonial (as you can see) and allegedly partially parasitic (as you can't see). This colony is on Bullick Hollow Road in western Travis County. So far as we know, this species has no common name. What can ye infer from that?