IMCRA Regions: Central West Coast, Leeuwin-Naturaliste, Otway.
Local Government Areas (LGAs): Cockburn, Irwin, Rockingham.
Habit and structure. Stolon coarse, (1–)2–4 mm in diameter, cartilaginous, naked, epilithic. Erect fronds medium to dark green, with simple or rarely branched axes, usually 15–50(–65) cm high and 1–2(–3) cm across; axes terete, naked below and 1–3 mm in diameter above, bearing normally 5 regular rows (occasionally 4 or 6 rows) of slender, terete, ramuli. Ramuli separated by about their basal width, 0.5–1.5cm long and 300–450(–600) µm in diameter, linear, directed and curved upwards, tapering near their apices to a short, blunt or spinous tip.
Distribution. From Eucla, W. Aust., to Wilsons Promontory, Vic., and around Tas.
Habitat. Occurs on rough-water coasts from rock pools down to 40 m.
[After Womersley, Mar. Benthic Fl. Southern Australia I: 260–262 (1984)]
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