Eudesme virescens (Carmichael ex Berkeley) J.Agardh
Thallus cylindrical, yellowish brown, to 500 mm long. Frond solid but soft, gelatinous, 1-4 mm wide with numerous irregular branches. Pseudoparenchymatous, easily squashed to reveal a multiaxial medulla of numerous colourless filaments and a cortex of stalked fan-like tufts of club-shaped pigmented assimilatory filaments 15-28 cells long. Assimilatory filaments grade into axial cells. Hairs present.
Unilocular and plurilocular sporangia formed at the bases of assimilatory filaments.
Littoral pools; epilithic.