Dipodium is straight when in bud. I believe the hook shape of the budding Gastrodia might be assist with species designation, but I won't be able to check for some time.
This hooked inflorescence when in bud is associated Gastrodia sesamoides and on the basis of that I am happy to confirm G. sesamoides as the other ACT species do not appear to do that. Matt if you have concerns please indicate.