Ceratophyllum, or hornwort, could turn out to be an exhibit in nearly each tank, but regrettably it has two main drawbacks. The leaves are so brittle that they snap off at the slightest touch, and it has no actual roots.
The leaves resemble Myriophyllum in structure, except that they’re coarser. I don’t advise its use in an exhibition tank, but it’s helpful for breeding if it’s weighted down with little pieces of lead.
If left floating in an aquarium, thin, tendril-like shoots grow from the stem towards the sand in an attempt to root.
It could be propagated from cuttings.