- 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)]