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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.

Rhipilia crassa A.Millar & Kraft

Reference
Phycologia 40:32-33, Figs 37-40, 53-58 (2001)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus spongy, medium green, attached by a narrow basal region that broadens to a peltate or irregular blade to 30 mm wide, often growing in clusters and anastomosing marginally with adjacent plants. Blades a coarse meshwork of several layers of siphons, these 60–100 μm diam., dichotomously to laterally branched, often with equal constrictions above branching points and rare shallow intercalary constrictions. Primary siphons bearing short lateral siphons, mostly unconstricted, straight or often curved, with terminal tenaculae, these 4–7-pronged, the prongs occasionally further divided and forming attachments to adjacent siphons. Apices of siphons rounded at the thallus margins and elsewhere when not involved with lateral attachment.

Distribution. Northern W.A., also in the southern Great Barrier Reef and the Philippines.

Habitat. Epilithic in the subtidal.

[After Huisman & Verbruggen, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 140 (2015)]