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The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

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Gayliella macrotricha (Feldm.-Maz.) Huisman

Reference
Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae 416 (2018)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus red, with prostrate and erect axes to 4 mm long, attached by rhizoids arising from periaxial cells of lower axes. Erect axes subalternately branched every 8–10 cells in primary axes and every 12–16 cells in lateral axes; apices straight to curved, not circinate. Periaxial cells 5 (–6), each producing basipetally a transversely aligned cell that subsequently cuts off 1 or 2 cells by oblique divisions from the upper or lower corners, and acropetally 2 or 3 cells obliquely that overlap the periaxial cell slightly and subsequently cut off an additional pair of cells. Mature nodes to 5 or 6 cells long. Distal nodes commonly with distal whorls of elongate hair cells.

Reproduction. Tetrasporangia 1–3 per node, involucrate, spherical, 60–70 µm diam. (including wall), tetrahedrally divided but often appearing decussate.

Distribution. Known from Mauritius, French Polynesia and the Rowley Shoals, probably widespread in the Indo-Pacific.

Habitat. Epiphytic in the subtidal.

[After J.M. Huisman in Algae of Australia: Marine Benthic Algae of North-western Australia, 2. Red Algae: 416 (2018)]