One of variables between heliamphora species is their roots.
Some species beg to be divided, spreading out on their own; clumping species resist being divided easily or with roots intact.
H. tatei is unique in that it's not only a clumper, but it also has the thickest roots I've ever seen in the genus (and flower stalks by the way).
I assume it goes along with its unique characteristic of sometimes forming vertical stems.
Notice the unique dual root structure, pencil thick in places.... obviously for structural strength imho.
No other species that I have seen comes close.