I wonder could anybody identify this plant for me? I have a couple of others that I would be grateful if they too could be identified but will post separately.
Thanks in advance.
While I am not sure that it originates from S.E. Asia, I would venture to guess that the common name is Indian Head ginger, Costus woodsonii. You might have better luck asking folks that are knowledgable about tropical plants.
I think hilee nailed it: Costus woodsonii aka Indianhead ginger, red cane ginger, or scarlet flag ginger.