Beard’s Provinces: South-West Province.
IBRA Regions: Avon Wheatbelt, Esperance Plains.
IBRA Subregions: Avon Wheatbelt P1, Recherche.
IMCRA Regions: Central West Coast, Eyre, Leeuwin-Naturaliste, Shark Bay, WA South Coast.
Local Government Areas (LGAs): Carnarvon, Cockburn, Esperance, Irwin, Morawa, Rockingham, Shark Bay, Wanneroo.
Habit and structure. Stolon slender to moderate, 0.7–2 mm in diameter, naked, epilithic. Erect fronds medium to dark green, with simple or branched axes, usually 4–16 cm high and 2–4(–5) mm across, with axes 1–1.5 mm in diameter densely covered to their bases by vesiculate ramuli. Ramuli 0.7–1.5 mm long, with a lower, sub-terete pedicel 300–800 µm long and 200–300 µm in diameter, then constricted and bearing a subspherical to ovoid-pyriform upper part (250–)350–500(–700) µm in diameter.
Distribution. From Middle I., Recherche Archipelago, W. Aust., to Walkerville, Vic., and northern Tas.
Habitat. In shaded rock pools and the uppermost sublittoral on rough-water coasts, recorded to 12 m deep.
[After Womersley, Mar. Benthic Fl. Southern Australia I: 270 (1984)]
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/