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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. 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.

Caulerpa sertularioides (S.G.Gmel.) M.Howe

Reference
Bull.Torrey Bot.Club 32:576 (1905)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current
Image

Scientific Description

Habit and structure. Thallus pale to dark green, spreading laterally to 35 cm, with smooth stolons 0.5–1.5 mm diam., attached by pillars bearing dense rhizoidal filaments. Assimilators simple or 1 or 2 times branched, to 8 cm tall and 16 mm wide, with a terete rachis c. 1 mm diam. Ramuli distichous (rarely tristichous or crowded), closely set, terete, 4–6 mm long, curved upwards and giving the plant a feathery appearance. Assimilators mostly with ramuli from just above the base, but occasionally with naked stipes to several (rarely up to 4) cm long.

Distribution. Widely distributed in tropical seas. In W.A. south to Coral Bay.

Habitat. Epilithic in the intertidal and shallow subtidal, occasionally in sandy areas. One of the more common taxa of Caulerpa, particularly within the Ningaloo Reef lagoon.

[After Belton, Huisman & Gurgel, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 95 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Carnarvon, Dampierland, Northern Kimberley, Pilbara.
IBRA Subregions
Cape Range, Mitchell, Pindanland, Roebourne.
IMCRA Regions
Canning, Kimberley, Ningaloo, Pilbara (nearshore), Pilbara (offshore), Shark Bay.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Cocos Islands, Derby-West Kimberley, Exmouth, Karratha, Port Hedland, Shark Bay, Wyndham-East Kimberley.