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Ceramium pseudocodii Huisman

Reference
Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae 403, Fig. 116E-I (2018)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus light red, with indeterminate prostrate axes attached by pigmented multicellular holdfasts arising as extensions from periaxial cells, and simple or once-branched erect axes to 2 mm tall, with straight apices. Axial cells of prostrate axes 40–45 μm diam. (including wall) [L:B 1.5–2.5]. Axial cells of erect axes 30–45 μm diam. [L:B 1–2 (shorter near apices)]; nodes to 35–50 μm diam. Periaxial cells 4, each obliquely cutting off 2 acropetal cells. Basipetal development absent or obliquely cutting off 1 or 2 cells, if only 1 cell this often appearing as a pseudoperiaxial.

Reproduction. Tetrasporangia arising acropetally on periaxial cells, 1 or 2 per node, spherical or subspherical, 30–35 μm diam., cruciately divided, with an involucre arising from the bearing cell and covering 70–90% of the tetrasporangium. Other reproductive structures not observed.

Distribution. Known from the Dampier Archipelago and Rowley Shoals, north-western Australia.

Habitat. Epiphytic in the subtidal.

[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 403 (2018)]