propagating echinodorus

I have an Echinodorus which has sent out what I think is a flower 
stalk, actually two of them. One of them failed to reach the water 
surface. The other is about twice longer and about a third of it is 
on the surface. Both stalks have what looks like flowers but they 
have not opened (yet). The flowers on the longer stalk are raised 
above the water surface. 

My question is: what should I do to propagate the plant? The shorter 
(and older) stalk have developed 2 small daughter plants, do these 
require any special treatment? 

I'll appreciate any info. 


Jan Fidrmuc

CentER for Economic Research
Tilburg University
P.O.Box 90153
5000 LE Tilburg, 
The Netherlands

Phone: +31-13-466-2678, +31-13-466-8221
Fax: +31-13-466-3066
Email: J.Fidrmuc at KUB_NL