In Europe aquarists use Myriophyllum heavily as a perfect substrate for
egg deposition, both for native or tropical species (mostly M.
brasiliense for tropicals) . Ceratophyllum can be a pest sometimes, and
believe me it is quite unpleasant to do snorkelling or skin diving in a
Ceratophyllum bed looking for some nice fishes. Sometimes is so harsh
that only a good suit will protect you skin.
If you scan a leaf whorl I can tell you the species.
Also for the Danish friend, aparently the echinatum is ranked as a ssp
today.
regards
sorin damian usa
Jeffrey Fullerton wrote:
>
> > Jeff, there is only one genus you can confuse Ceratophyllum with. It is
> > Myriophyllum, and there is an empirical way to separate them.
> > Ceratophyllum leaves are harsher when touched, stiffer, because they
> > have more calcium in the tissue. This is an empirical approach, but good
> > enough to separate the two genera.
> >
> There is no confusion between the two genera. It's separating the
> hornworts from each other. Thankfully there are only two or three to
> contend with as opposed to several in the case of Milfoils!
> I currently grow at least half a dozen species of Milfoils and it took
> me a while to figure them out.
>
> Jeff
>
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