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Electronic Flora of South Australia Species Fact Sheet

Codium lucasii Setchell in Lucas 1935: 200; 1936: 50, fig. 31.

Phylum Chlorophyta – Order Codiales – Family Codiaceae

Selected citations: Silva & Womersley 1956: 265, fig. 3.

Thallus (Fig. 75C) firm, dark green, applanate, lobed, closely adherent, to 1 cm thick and to 15 cm across. Utricles (Fig. 76C,D) in clusters, (45–) 50–100 (–130) µm in diameter at apex and slightly to markedly constricted just below apex, 400–800 (–1200) µm long; utricle wall at apex slightly (Fig. 76C) to markedly (up to 65 µm, see Fig. 76D) thickened, internally often pitted; hairs (or scars) common on older uncles. Medullary filaments 12–35 µm in diameter, without plugs. Gametangia fusiform, 60–125 µm in diameter, 210–360 µm long.

Type from Bondi, N.S.W.; in UC, 395199.

Selected specimens: Port Denison, W. Aust., outer reef pools (Woelkerling, 8.xi.1968; ADU, A33142). Cottesloe, W. Aust., drift (Royce 1039, 12.vi.1951; PERTH, UC). Sceale Bay, S. Aust., upper sublittoral (Womersley, 11.ii.1954; ADU, A19416). Elliston, S. Aust., lower eulittoral (Womersley, 15.i.1951; ADU, A20401). Port Noarlunga, S. Aust., low eulittoral on reef (Womersley, 15.iv.1945; ADU, A16395). Vivonne Bay, Kangaroo I., S. Aust., 1–5 m deep on jetty pylon (Kraft, 19.i.1974; ADU, A45051). Walkerville, Vic., at low tide level, shaded (Sinkora A1528, 22.ii.1972; ADU, A42317). Currie R., Tas. (Perrin & Lucas, March 1935; Perrin 43b in BM).

Distribution map based
on current data relating to
specimens held in the
State Herbarium of SA

Distribution: From Port Denison, W. Aust. around southern and eastern Australia to Redcliffe, Qld, and the north coast of Tasmania, in the lower eulittoral and uppermost sublittoral on rough-water to moderate coasts.

South Africa (subsp. capense Silva 1959: 111, fig. 3).

Taxonomic notes: C. lucasii is most closely related to C. capitulatum but has shorter utricles with less symmetrical apices.


LUCAS, A.H.S. (1935). The marine algae of Lord Howe Island. Proc. Linn. Soc. N.S. W. 60, 194–232, Plates 5–9.

LUCAS, A.H.S. (1936). The Seaweeds of South Australia. Pt. I. Introduction and the Green and Brown Seaweeds. (Govt Printer: Adelaide.)

SILVA, P.C. & WOMERSLEY, H.B.S. (1956). The genus Codium (Chlorophyta) in southern Australia. Aust. J. Bot. 4, 261–289.

SILVA, P.C. (1959). The genus Codium (Chlorophyta) in South Africa. J. S. Air. Bot. 25, 103–165, Plates 2–16.

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

Illustrations in Womersley Part I, 1984: FIGS 75C, 76C, D.

Figure 75 image

Figure 75   enlarge

Fig. 75. A. Codium dimorphum (ADU, A19830). B. Codium capitulalum (ADU, A19384). C. Codium lucasii (ADU, A45051). D. Codium perriniae (ADU, A37803). E. Codium spongiosum (ADU, A1581).

Figure 76 image

Figure 76   enlarge

Fig. 76. Utricle clusters with gametangia. A. Codium dimorphum (ADU, A19830). R. Codium capitulatum (ADU, A13623). C. Codium lucasii (ADU, A20401). D. Codium lucasii (Royce 1039 in PERTH, UC). E. Codium perriniae (ADU, Al2781). F. Codium spongiosum (ADU, A19383). (After Silva & Womersley 1956.)

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