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 Conservation listings displayed on Florabase may also be out of date.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

Reference: Voy.Pôle Sud Pl.Cell. 1:21-22 (1845)
Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Scientific Description

Habit and structure. Thallus grass-green to dark green, often with straw-coloured tips, with smooth stolons 1.5–2.5 mm diam., attached by pillars 1–2 cm long with clustered rhizoids. Assimilators to 5–7 cm tall, with a smooth terete stalk 1.5–3.0 cm long and 2–3 mm diam., distally richly dichotomously to irregularly branched. Rachis to 1 mm wide, bearing short perpendicular ramuli in 2 or 3 ranks, these essentially wart-like protuberances with pointed tips.

Distribution. Occurs in tropical waters of the Indo-West Pacific Ocean; in W.A. known from the Dampier Archipelago.

[After Belton, Huisman & Gurgel, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 99 (2015)]