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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.

Ulva clathrata (Roth) C.Agardh

Reference
Disp.Alg.Suec. 2:23 (1811)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Habit and structure. Thallus light to medium green, erect but often flaccid, 2–8(–20) cm high, basally attached or becoming loose-lying, usually much and irregularly branched but often with almost simple branches from near the base, branches usually 1–3(–5) mm broad, sometimes very slender but mostly pluriseriate. Cells mostly in longitudinal rows but not in prominent transverse rows, square to rectangular or often rounded in surface view, 12–16(–20) µm long and (5–)10–16 µm broad; chloroplast often occupying only part of the cell in surface view and lobed or dentate, with 2–4 (–6) pyrenoids.

Reproduction. Generations isomorphic, gametophytes dioecious and slightly anisogamous; apomictic development of gametes can occur.

Distribution. Cosmopolitan.

[After Womersley, Mar. Benthic Fl. Southern Australia I: 157 (1984), as Enteromorpha clathrata]

John Huisman & Cheryl Parker, 3 August 2021

Distribution

IMCRA Regions
Kimberley, Leeuwin-Naturaliste.
Local Government Areas (LGAs)
Derby-West Kimberley, Rockingham.