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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.

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Colaconema robustum (Børgesen) Huisman & Woelk.

Reference
Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae 27 (2018)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus arising from a single thick-walled cell, presumably the original spore, without a prostrate system. Erect axes straight, irregularly secundly branched, with terete cells 7–12 µm diam. [L:B 3–5]. Plastids single, parietal, lobed, with a prominent pyrenoid.

Reproduction. Monosporangia mostly pedicellate, occasionally sessile, sometimes in short series of 2 or 3 sporangia, ellipsoidal, 18–20 µm long and 9–14 µm diam.

Distribution. Widespread in tropical seas.

Habitat. Epiphytic on Sargassum.

[After J.M. Huisman & W.J. Woelkerling in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 27 (2018)]