what is this? (fwd)

---------- Forwarded message ----------
Date: Thu, 18 Apr 1996 08:29:00 -0500 (CDT)
From: Wehde, Mark B. <MBW01 at msmail2_mayo.edu>
To: owner-aquatic-plants <owner-aquatic-plants at actwin_com>
Subject: what is this?

After planting my last order from Delaware Aquatics, I noticed about 100   
small ( about 1/8" ) green 4 leaf clover shaped leaves.  They float on   
the top of the tank and have since ( 2 weeks ) put down about 1" roots.   
 I think they were in the package with some hygrophylia polysperma   
"tropical sunset", but could of been with the bacopa or red ludwigia.   
 Does anybody have any ideas what these are?

Thanks for any help