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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. The Herbarium team, working with the Biodiversity Information Office, now have the Nomos-hosted WACensus in production, and we will begin to update the flora and fungi for WA within the system soon. The Specify project team continues to test and streamline the new collections management system, and we expect this to be online in October. 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 Thursday, 1 October 2026 +08:00.

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Padina tetrastromatica Hauck

Reference
Hedwigia 26:43-44 (1887)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus brown, to 15 cm tall, deeply divided into flabellate segments when mature, lightly calcified on the ventral surface. Hairs in concentric lines on the dorsal surface. Fronds with 3 or 4 cell layers in the upper thallus and 4 layers in the middle and lower thallus. Non-indusiate sporangial sori on both sides of hair lines on the dorsal surface.

Distribution. Pantropical. In Australia known from Dampier, W.A., presumably across northern Australia to Townsville, Qld.

Habitat. Epilithic in the intertidal and shallow subtidal.

[After Huisman & Phillips, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 214 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IMCRA Regions
Pilbara (nearshore).
Local Government Areas (LGAs)
Karratha.