Electronic Flora of South Australia Family Fact Sheet

FAMILY POLYPHYSACEAE Kützing

Phylum Chlorophyta – Order Dasycladales

Thallus with whorls of laterals of two types, with either numerous whorls of colourless branched hairs and a terminal cupulate or clustered whorl of green, clavate, gametangial rays which may be lost after reproductive maturity and later replaced, or alternating whorls of colourless hairs and green gametangial rays. Superior corona present on the upper, basal side of the gametangial rays, bearing hairs or their scars; inferior corona present or absent, not forming hairs.

Reproduction: Reproduction by gametes formed in cysts produced in the gametangial rays.

Taxonomic notes: A family of three living genera, largely tropical but with one species in each of two genera on southern Australian coasts.

The family Polyphysaceae was established by Kützing (1843, pp. 302, 311) to include Polyphysa and Acetabularia, and predates the family name Acetabulariaceae Naegeli (1847, pp. 158, 252).

References:

KÜTZING, F.T. (1843). Phycologia generalis. (Leipzig.)

NAEGELI, C. (1847). Die Neuern Algensysteme und versuch zur bergrundung eines eigenen systems der Algen und Florideen. Nouv. Mem. Soc. Helvet. Sci. Nat. 9, 1–275, Plates 1–9.

The Marine Benthic Flora of Southern Australia Part I complete list of references.

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (31 May, 1984)
The Marine Benthic Flora of Southern Australia
Part I
©Board of the Botanic Gardens and State Herbarium, Government of South Australia

KEY TO GENERA OF POLYPHYSACEAE

1. Gametangial rays united laterally to form a disc or cup; inferior corona present

ACETABULARIA

1. Gametangial rays free or at most loosely united; inferior corona absent

POLYPHYSA


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