Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Monday, 2 March 2026 +08:00.

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Microdictyon okamurae Setch.

Reference: Univ.Calif.Publ.Bot. 13:107 (1925)
Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Scientific Description

Habit and structure. Thallus medium to dark olive green, to 3.5 cm tall, with several loosely organized complanate blades with ragged margins. Blades reticulate, formed by much-branched, anastomosing filaments, these 190–250 µm in diameter, 485–630 µm long and bearing up to 5 branches per node. Adhesion of filaments to target filaments by digitate processes. Cells with a reticulum of plastids, with numerous spherical pyrenoids 2–3 µm in diameter.

Distribution. Widespread in tropical waters of the Indo-Pacific.

Habitat. Epilithic.

Distribution

IBRA Regions: Swan Coastal Plain.
IBRA Subregions: Perth.
Local Government Areas (LGAs): Cockburn.