You can get a lot of info if you google it. I understand it is indigenous to the Northeast coast of the US and Canada. It is a somewhat rare plant and was listed at one website as status G3 -- global concern for extinction. I don't believe it was listed as endangered, but it was listed as G3- global concern for extinction. Although another website said that a survey done in the US in the late 90's identified about a third of native plants in the US as potentially at risk for extinction! kinda scary!
They are an easy to grow eriocaulon. I have been growing it in a fairly rich substrate, CO2 and high light. Multiple plants will grow from one plant and I have been splitting them about 1x per month. I'm not sure how low the KH has to be, but I have been growing them in Seattle water which is about KH 2 out the tap and I have been growing one at about KH 4, under moderate/low light, with minimal CO2, no water column fertilization -- air bubble bubbling constantly -- not that I would advise growing them this way, but the plant does seem to still be growing and multiplying even under these conditions. When flowering stalks appear, I usually twist them off.
If you are interested in growing it and have patience, I know of a place you can probably get them cheaply, but you have to wait a bit..