Reproducing Echinodorus horemani

Has anyone attempted to produce plantlets from E. horemani? The plant
is several years old and has never produced plantlets or a flower
stalk. I've checked several books and believe it to be E. horemani.
Should I allow the whole plant to float or should I cut the rhysome
and let it float in the hope that plantlets will sprout.

Dave Whittaker                       ac554 at FreeNet_Carleton.CA
Gloucester, Ontario                  dwhitt at magmacom_com