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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. The Herbarium team, working with the Biodiversity Information Office, now have the Nomos-hosted WACensus in production, and we will begin to update the flora and fungi for WA within the system soon. The Specify project team continues to test and streamline the new collections management system, and we expect this to be online in October. 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 Thursday, 1 October 2026 +08:00.

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Derbesia minima Weber Bosse

Reference
Liste Alg.Siboga 1:95-96, Fig. 23 (1913)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus dark green, to 2 mm tall, tufted, arising from an irregularly lobed rhizoidal base, bearing erect simple to once-branched siphons to 50 µm diam. near the base, tapering to c. 20 µm diam. near the apices; siphons occasionally septate. Chloroplasts numerous, subspherical, 3–5 µm diam., each with a pyrenoid. Sporangia obovoid or pyriform, 100–120 µm long (including pedicel), 60–75 µm diam., with a short pedicel and double septa at the base.

Distribution. Reported from Indonesia, Japan, tentatively from Bikini Atoll (Marshall Islands) and in Australia from Qld and northern W.A.

Habitat. Epizoic in the intertidal.

[After Huisman, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 115-116 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IMCRA Regions
Canning.
Local Government Areas (LGAs)
Broome.