Beard’s Provinces: Eremaean Province.
IBRA Regions: Pilbara.
IBRA Subregions: Roebourne.
IMCRA Regions: Bonaparte Gulf, Canning, Pilbara (nearshore).
Local Government Areas (LGAs): Ashburton, Karratha, Wyndham-East Kimberley.
Habit and structure. Thallus densely tufted, dark red, with creeping and erect axes to 3 cm tall. Axes tough and cartilaginous, sparingly dichotomously branched, 180–300 µm in diameter. Cells of medullary core rounded in cross section, 5–10 µm in diameter; outer medullary cells 10–25 µm in diameter, grading to outer cortical cells 3–7 µm in diameter, these in surface view slightly longitudinally elongate.
Reproduction. Tetrasporangia in conspicuous inflated nemathecia at branch apices, cruciately divided, ellipsoidal, 25–40 × 18–22 µm. Other reproductive structures not observed.
Distribution. Widely distributed in warm-temperate and tropical seas.
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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/