D. graminfolia - Botumirin, Brazil. These seedlings are doing great and getting big... A little over a year old now. I give em a mist of Maxsea every couple of weeks. Pretty sure they are true graminifolia, their leaves unfurl in perfect spirals. Not oblong spirals of the D. spiralis.
Adult D. spiralis i've had for a year or so. You'd think it'd need repotted but I fear disturbing it because its been doing so well. Leaves typically unfurl in a very oblong way, bad example in these current pics.