Re: Aquatic Plants Digest V2 #416

>From: Dennis Santiago <dennis at nhb_com>
>Date: Sun, 29 Dec 1996 22:22:59 -0500
>Subject: Re; H. Difformis
>Last Dec. 28, you wrote:
>I posted this question before, but didn't get any response, soooo, I'll try
>again.  I'm puzzled by the growth habit of my h. difformis.  It grows up from
>the substrate about 2 inches, then parallel to the gravel for an inch or so,
>then up to the surface again.  This makes for some very interesting S-shaped
>stems, though it is not quite what I was hoping for.  Any explanations?

I have a patch of cabomba that does a similar thing, but I know the reason.
The way the currents flow in the tank, the cabomba is in a down-draft, which
forces the stems outward for a few inches until the current is weaker, at
which point it grows up towards the light again.  It makes for an
interesting "star" effect.