Which set of organisms multiply by fragmentation?

Fungi multiply and spread easily due to the millions of asexual spores they produce. In lower organisms like yeast and hydra, we observe budding. In Planaria (flat worms), we observe true regeneration, i.e., a fragmented organism regenerates the lost part of its body and becomes, a new organism. Fungi,the filamentous algae, the protonema of mosses, all easily multiply by fragmentation.