Hi Roland.Sahyadrica and tulunadensis the same plants but different names i think
They look pretty much the same, but that is yet to be determined by botanists by flowering and comparing the flowers. So far I think no one has done that. I talked with Vin Kutty recently and he says they are not and that in fact anyone claiming to have R. sahydrica actually is R. tulundensis. True or not I don't know. All I know is that it's a tricky plant, at least in the environment I have been trying to grow it in. It craps on me unexpectedly after growing fine for some time. What's your current fert regime in that tank @Roland and how old is the soil when you planted the T. tulunadensis? Also what's your current dGH? Thank you.