Electronic Flora of South Australia Genus Fact Sheet
Phylum Chlorophyta – Order Ulvales – Family Ulvaceae
Thallus of several to many tubular, erect fronds, simple or branched, arising from a prostrate, multicellular attachment disc, without distinct rhizoids. Cells of thallus small, mostly less than 10 µm across; chloroplast near the outer end of the cells, lobed and usually stellate, with a single, central pyrenoid.
Life history and reproduction (Bliding 1963, p. 23) by quadriflagellate zoospores only. Sexual reproduction unknown.
Type species: B. minima (Naegeli ex Kützing) Kylin.
Taxonomic notes: A genus of three species, widely distributed and usually intertidal, distinguished from Enteromorpha by the germination of the zoospores (where in most species the cell contents move to the upper cell at the first division), by the basal multicellular holdfast without rhizoids (though the cells are usually elongate), by the stellate chloroplast with a single central pyrenoid, and by the small size of the cells.
BLIDING, C. (1963). A critical survey of European taxa in Ulvales. Part I. Capsosiphon, Percursaria, Blidingia, Enteromorpha. Opera Bot. 8(3), 1–160.
KYLIN, H. (1947). Über die Fortpflanzungsverhältnisse in der Ordnung Ulvales. K. Fys. Sällsk. Lund. Forh. 17, 174–182.
The Marine Benthic Flora of Southern Australia Part I complete list of references.
Womersley, H.B.S. (31 May, 1984)
The Marine Benthic Flora of Southern Australia
©Board of the Botanic Gardens and State Herbarium, Government of South Australia
KEY TO SPECIES OF BLIDINGIA
1. Cells of tubular thallus arranged without order
I B. minima
1. Cells of tubular thallus mostly arranged in distinct rows
State Herbarium of South Australia