Dear all, I dont think we should unscrupulously follow the description of an Indian plant from anywhere else in the world, whether it is Pakistan, China or Taiwan. Just in the case of current link given by Mr. Tanay, trunk of my plant was sometimes over 15cm in diameter though it never reached 6 meter but it was somewhere around 4m in height. My plant was not found in dark forest as you can see the area was so bright that I had even problems in taking pictures. To be specific the particular individuals in the pic were growing near a stream in a Pinus roxburghii forest. Rocky stream was almost dried up but may be some water was there in the rocky crevices. I hope people will take my comments in good spirits.
Presence of spines on the stipes are the main feature to identify this Cyathea. Pankaj