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Service Notice

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 Conservation listings displayed on Florabase may also be out of date.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.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +08:00.

Caulerpa dichotoma Sved.

Reference
Rep.Ceylon Mar.Biol.Lab. 2:127, Figs 23-24 (1906)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus grass-green to dark green, spreading laterally to 20 cm, with smooth stolons 3–4 mm diam., attached by pillars to 5 cm long bearing numerous rhizoids. Assimilators fleshy, to 9 cm tall and 1.5–2.0 cm wide. Rachis slightly to markedly flattened, 3–4 mm wide, unbranched, basally with a smooth stalk 2–5 mm long and 2.0–2.5 mm wide, then bearing distichous ramuli arising alternately or suboppositely from the margins at intervals of 2–3 mm. Ramuli clavate to once-dichotomous, 7–9 mm long and 2–4 mm wide.

Distribution. Known only from One Arm Point, W.A., and the type collection from Sri Lanka.

[After Belton, Huisman & Gurgel, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 89 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Dampierland.
IBRA Subregions
Pindanland.
Local Government Areas (LGAs)
Broome.