Mesogloia vermiculata (Smith) S.F.Gray
Description: Thallus cylindrical, muddy
olive-brown, to 300 mm long. Frond soft and gelatinous,
smooth main axis obvious, 2-5 mm wide, irregularly swollen and
constricted; branching irregular, branches numerous, giving rise
to secondary and tertiary branchlets.
Pseudoparenchymatous, uniaxial, easily squashed to reveal a
medulla of colourless assimilatory filaments 7-10 cells long,
terminal cells, globose, up to 15-20 µm in diameter.
Habitat: Littoral; epilithic (sand covered rock
and stone).
Key characteristics: Slimy, brown.

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