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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not reflected in Florabase, herbarium collections, or in the census. We are hoping to be able to reinstate services around December 15; we will provide an update at that time.

The notice period started at 9:00 am on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Monday, 15 December 2025 +08:00.

Codium geppiorum O.C.Schmidt

Reference
Biblioth.Bot. 23(91):50, Fig. 33 (1923)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current
Image

Scientific Description

Habit and structure. Thallus procumbent, repent, densely branched, forming patches to 8 cm diam., attached to the substratum here and there by small tufts of rhizoids. Branches subterete, narrow, 2–4 mm wide, divaricate, intertwining. Utricles produced individually by enlargement of interutricular filaments, obovate to clavate or subpyriform, tapering basally to a greater or lesser extent, 470–790 μm long, 95–250 μm diam. Hairs (or hair scars) infrequent. Gametangia conical to fusiform, 80–180 μm long, 40–65 μm diam., borne near the midline of the utricle. Medullary filaments mostly 15–30 μm diam.

Distribution. Widespread in the Indo-Pacific.

Habitat. Epilithic in the intertidal and subtidal.

[After Silva & Chacana, Algae of Australia: Mar. Benthic Algae of North-western Australia, 1. Green and Brown Algae 109 (2015)]

John Huisman and Cheryl Parker, 3 August 2021

Distribution

IBRA Regions
Dampierland, Indian Tropical Islands, Pilbara.
IBRA Subregions
Pindanland, Roebourne.
IMCRA Regions
Kimberley, Pilbara (nearshore), Pilbara (offshore).
Local Government Areas (LGAs)
Ashburton, Broome, Cocos Islands, Karratha, Wyndham-East Kimberley.