Electronic Flora of South Australia Genus Fact Sheet
Phylum Chlorophyta – Order Ulvales – Family Ulvaceae
Thallus unbranched, filamentous, uniseriate at first but soon becoming biseriate with two rows of rectangular cells fairly regularly arranged, at first attached by a basal disc or by rhizoids but soon becoming loose-lying. Cells uninucleate, chloroplast parietal, laminate, usually occupying only part of the cell, with 1–3 pyrenoids.
Life history diplohaplontic, isomorphic and anisogamous.
Type species: P. percursa (C. Agardh) Rosenvinge.
Taxonomic notes: A genus with one widely distributed species and a second from California (Abbott & Hollenberg 1976, p. 69).
ABBOTT, I.A. & HOLLENBERG, G.J. (1976). Marine Algae of California. (Stanford Univ. Press: Stanford.)
BORY DE ST-VINCENT, J.B. (1823). Conferva. Dict. Class. d'Hist. Nat. 4, 389–394.
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
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