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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.

Eudesme virescens © M.D. Guiry
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