The species was identified in 2014 based on molecular phylogenetics using ITS sequences as belonging to the “Paschima” clade.

[1] The fronds are erect, filamentous, and grass-green in color, 5 cm-40 cm in length, mostly unbranched, tubular, with some parts of the thalli compressed like flat ribbons.

The tufts of filamentous thalli are attached to the substrate by rhizoids.

Thalli from low-saline environments are branched, while that exposed to the ocean are non-branched.

When these haploid plants release gametes they unite to produce the zygote which germinates, and grows to produce the diploid plant.