Sewing thread for riccia
Will give that a go!
or just leave it floating for floating mats
That's kind of how mine ended up! After unsucessful gluing (well, it lasted a while, but eventually all came off) to a piece of bogwood, it kept floating again. As it was during mum and dad's health decline, and it was outcompeting my other floating plants, I tried to eliminate it, but it kept coming back from even the smallest part.
Killed off most of the delicate live plants in my 15.5g because it just kept forming thick, dense mats that would coat the entire surface and just get thicker and thicker if given the chance! Since I had less and less time for mucking about with tanks beyond basic maintenance, I left it get way to big and thick, and the bushy type algae that I don't mind in a sane amount took over the lower levels too, so combined, they choked out most anything else!
So I wanted to check before transferring any to another tank! I wouldn't let it get like that again, but still! Especially if it does inhibit floating plant growth.