Dear Christoph<
I do not know to which plant you refer, if you could send a photo (if you are
in possession of the plant) I may be able to I.D. it. However, the Sumatran
species are in a big mess taxinomically, the American growers often have one
name, the Germans another, etc. I have three plants all labeled pectinata and
none are similar. Whether this is species variation or individual species I
haven't a clue. I do have at least one unnamed lowland weedy plant from
Sumata that so far defies I.D. , it may be a gracilis hybrid but can't I.D.
the other parent.
Anyway if you want to send a photo:
Cliff Dodd
c/o The Aku Tiki Inn
2225 S. Atlantic Ave.
Daytona Beach, FL 32118
Good Growing!