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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.

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Corallophila huysmansii (Weber Bosse) R.E.Norris

Reference
Bot.Mar. 36:396 (1993)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus to 3.5 mm tall, sparingly branched. Prostrate axes 120–200 μm diam., attached by clusters of rhizoids 10–30 μm diam., arising from periaxial cells and cortical cells near nodes. Rhizoids unicellular or forming multicellular digitate pads at attachment points. Erect axes to 80–100 μm diam., tapering gradually to the straight apices. Axial cells with 4 periaxial cells, their position rotated 45° relative to those on subtending axial cells; each periaxial cell cutting off 2 acropetal and 2 basipetal initials. Acropetal initials forming a short filament; basipetal initials each producing one descending filament, this cutting off corticating cells that are transversely elongate; in surface view forming straight or sinuous longitudinal lines.

Reproduction. Tetrasporangia in whorls of 4, arising acropetally on periaxial cells and embedded in the cortex, spherical, 35–40 μm diam. (including wall), tetrahedrally divided.

Distribution. Known from warmer waters of the Indo-Pacific. In Australia, also reported from Queensland and Lord Howe Island.

Habitat. Epilithic in the subtidal.

[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 409–411 (2018)]