Ulva lactuca

Common name: 

Sea Lettuce

Distribution (from Flora of Victoria):

In southern Australia, known from Christies Beach and St Kilda (SA) and Port Phillip (Vic) [11]

Map - Australia's Virtual Herbarium

Distribution and ecological preference at Wilsons Promontory (if known):


Flower description:



Green algae with grass green thallus to 15 cm long. There is usually a single frond from the holdfast, margin entire and surface smooth1

Distinguishing characteristics (within family/genus):

Characterised by the single, simple, to irregularly divided and relatively thin thallus with an entire margin. Cells in cross section are almost square1

Image of Ulva lactuca
Image of Ulva lactuca Image: Heroen Verbruggen
Conservation status:


1 Womersley, H. B. S. (1984). “The marine benthic flora of Southern Australia. Rhodophyta. Part I”. ABRS, Canberra.