[2] Boedeker et al. in their 2016 manuscript recognized the green algal genus Pseudorhizoclonium as a separate clade from Rhizoclonium sensu stricto based on molecular data.

[3] According to Sherwood et al., Pseudorhizoclonium may appear as bunches or mats of relatively straight or curled filaments, forming intertwined strands and woolly masses in the upper intertidal.

[3] Sherwood et al. affirmed in their paper that the only definitive character that distinguishes Pseudorhizoclonium from Rhizoclonium is the larger number of nuclei per cell.

These include French Polynesia, Brazil, Japan, Australia, United States of America, Mexico, Puerto Rico, Thailand, Guyana, Bermuda, Saudi Arabia, Portugal, Dominican Republic, Ghana, Papua New Guinea, Costa Rica, Micronesia, Jamaica, Panama, Colombia, Indonesia, and Ecuador.

The unusual high tolerance for fluctuating environmental conditions can be a factor to the remarkable number of habitat transitions observed within the genus.