Blidingia marginata (J.Agardh) Bliding
Opera Bot. 32 (1963)

Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Scientific Description
John Huisman & Cheryl Parker, Thursday 8 September 2016

Habit and structure. Thallus grass-green, usually growing on basal stems of samphires or in shaded intertidal situations, 0.2–2(–5) cm high and (50–)100–300(–1000) µm broad, simple or occasionally branched, arising from a multicellular pad-like holdfast of isodiametric to elongate cells. Cells arranged in lengthwise rows throughout the thallus, angular to rounded and mostly isodiametric, 6–8(–9) µm across. Chloroplast filling the cell or slightly stellate, with a single, central, prominent pyrenoid.

Reproduction. By quadriflagellate zoo(mito)spores.

Distribution. Europe, Eastern N. America, New Zealand. In southern Australia, known from the Recherche Archipelago, W. Aust., Streaky Bay, Ardrossan and Port Adelaide, S. Aust.

Habitat. In the mid to upper eulittoral zone in calm water samphire or Juncus communities.

[After Womersley, Mar. Benthic Fl. Southern Australia I: 150 (1984)]