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The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

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Bryopsis foliosa Sond.

Reference
Bot.Zeit. 49 (1845)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus 4–10(–15) cm high, bushy and very densely branched with 3(–4) orders of branching, with few to numerous axes arising from a much branched, extensive, rhizoidal basal system, epilithic or epiphytic on Posidonia. Axes irregularly and densely branched above with some laterals strongly developed and basally denuded; young axes and laterals narrowly lanceolate in outline; branching of axes and laterals essentially radial but on plants epiphytic on Posidonia and Heterozostera branching on some older axes tending to be limited to opposite sides of the axes but irregularly placed. Axes (300–)400–1000 µm in diameter; main laterals 300–500 µm in diameter, lesser laterals 1–4 mm long, 100–200 µm in diameter; ramuli (0.2–)0.5–1 mm long, (50–)75–100(–125) µm in diameter, upwardly curved and slightly tapering; scars on laterals prominent.

Reproduction. Unknown.

Distribution. Apparently limited to the coast from Whitfords Beach to Hamelin Bay, and on Rottnest I., W. Aust.

Habitat. On rock platforms at low tide level and on Posidonia, Amphibolis and Zostera in shallow water.

[After Womersley, Mar. Benthic Fl. Southern Australia I: 278–280 (1984)]

John Huisman & Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Swan Coastal Plain.
IBRA Subregions
Perth.
IMCRA Regions
Central West Coast, Leeuwin-Naturaliste.
Local Government Areas (LGAs)
Dandaragan, Rockingham.