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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Monday, 2 March 2026 +08:00.

Porphyropsis minuta Womersley & Conway

Reference
Trans.Roy.Soc.South Australia 68; fig 7 (1975)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus greenish-brown to purple, with a pulvinate parenchymatous holdfast 50–100(–200) µm across (cells without rhizoidal extensions) from which one to several minute, subspherical to ovoid, bladders (to 2 mm across) arise, later becoming sinuate and rupturing to form irregular monostromatic membranes 2–5(–12) mm high and across, often with convolute margins; epiphytic. Cells of bladders and membrane often in pairs or fours following division, and lying in rows more or less at right angles, sometimes becoming irregular; membrane 8–12 µm thick, cells rounded to slightly elongate, 3–5 µm across, with a parietal rhodoplast filling most of the cell, without a pyrenoid.

Reproduction. By monospores released from whole cells near the margin of the membranes, subspherical to ovoid, 5–7 µm across.

Distribution. Garden I., W. Aust., around southern Australia to Collaroy, N.S.W.

Habitat. Epiphytic on Pterocladia capillacea and other firm-surfaced algae on rough-water coasts.

[After Womersley, Mar. Benthic Fl. Southern Australia IIIA: 31–33 (1994)]

John Huisman & Cheryl Parker, 3 August 2021

Distribution

IMCRA Regions
Leeuwin-Naturaliste.
Local Government Areas (LGAs)
Rockingham.