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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 Conservation listings displayed on Florabase may also be out of date.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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Episporium centroceratis Moebius

Reference
Ber.Deutsch.Bot.Ges. (1885)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus minute, hemispherical to globular, 300–500 µm across, supported on a relatively large basal cell, pale in colour; parasitic on Centroceras. Structure. Basal cells attached to host cells, elongate, becoming 20–35 µm in diameter at upper broader end and L/D 2–3, with several branches of cells from the upper end compacted to form the globular thallus; lower cells ovoid, 10–15 µm in diameter and L/D 1–1.5, decreasing to terminal cells 6–8 µm in diameter and L/D 2–3. Cells uninucleate; plastids absent.

Reproduction. Gametophytes monoecious or dioecious. Carpogonial branches borne on outer filaments, 2(–4) cells long, the carpogonium conical with a long trichogyne, the hypogynous cell elongate, with or without shorter lower cells. Carposporophytes hemispherical, slightly projecting on the thallus surface, with a relatively large fusion cell. Spermatangia terminal on outer cells, ovoid, 2.5–3(–4) µm in diameter. Tetrasporangia terminal on filaments, ovoid, 10–15 µm in diameter, cruciately or decussately divided.

Distribution. NW Australia, Lord Howe I. In southern Australia, only known from Wanna, S. Aust.

[After Womersley, Mar. Benthic Fl. Southern Australia IIIC: 422 (1998)]