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Electronic Flora of South Australia Species Fact Sheet

Naccaria naccarioides (J. Agardh) Womersley & Abbott 1968: 177, figs 1–13, pl. 1.

Phylum Rhodophyta – Class Florideophyceae – Order Bonnemaisoniales – Family Naccariaceae

Selected citations: Millar 1990: 378, figs 33–35. Millar & Kraft 1993: 34.

Synonyms

Ardissonea naccarioides J. Agardh 1899: 99.

Neoardissonea naccarioides (J. Agardh) Kylin 1956: 127. May 1965: 385.

Thallus (Fig. 160A) brown-red, mucilaginous, 4–14 cm high, much branched irregularly radially for 4–5 orders; branches terete, 100–200 µm in diameter near apices, 0.5–1 mm in diameter in main branches and 1–1.5 mm near the base. Holdfast discoid, 1–4 mm across, with one to a few axes; epilithic. Structure uniaxial (Fig. 160B–D), with a dome shaped apical cell dividing obliquely, subapical cells each cutting off first a periaxial filament (Fig. 160D) on an irregular spiral of 1/4, and 8–10 axial cells from the apex cutting off a second, posterior and usually opposite, periaxial cell; periaxial filaments subdichotomous, directed towards branch apices, the inner cells becoming ovoid and in lower branches 40–80 µm in diameter, decreasing to the outer cortex with outermost cells ovoid and 4–6 µm in diameter; inner periaxial cells producing simple or branched rhizoids surrounding the axial filament which becomes 10–20 (–30) µm in diameter; older branches (Fig. 160E) pseudoparenchymatous in section, hairs common near apices; branches originate from periaxial cells. Rhodoplasts discoid, ribbon like in inner cells.

Reproduction: Gametangial thalli monoecious. Carpogonial branches (Fig. 160G) originating near branch apices, borne on inner cells of periaxial filaments or on the rhizoids, usually 4-celled with the hypogynous cell bearing dense clusters of nutritive cells, trichogyne spirally contorted; clusters of short branched filaments often present (Fig. 160F). Carposporophyte with a branched fusion cell producing clustered gonimoblast filaments between the cortical filaments (Fig. 160C, H), the terminal (and often subterminal) cells forming clavate carposporangia 8–12 µm in diameter; carposporophytes moderately discrete, slightly swelling the branches. Spermatangia (Fig. 1601) in patches on upper branches, cut off from outer cortical cells, ovoid, 2–3 µm in diameter.

Tetrasporophyte unknown.

Holotype from Western Port, Vic. (Wilson, 23.i.1893); in Herb. Agardh, LD, 31996.

Selected specimens: Gunyah Beach, Coffin Bay Pen., S. Aust., uppermost sublittoral (Ricci, 29.xi.I990; AD, A60806). Victor Harbor, S. Aust., drift (Abbott, 2.xi.1965; AD, A29627). Vivonne Bay, Kangaroo I., S. Aust., 0–6 m deep on jetty piles (Kraft & Min-Thein, 4.xii.1971; AD, A41421). Margaret Brock Reef, Cape Jaffa, S. Aust., 4–5 m deep in caves (R. Lewis, 29.xi.1972; AD, A42917). Cape Northumberland, S. Aust., 15 m deep (Shepherd, 1.ii.1978; AD, A49148). Rocky Cape, N Tas., drift (Gordon, 18.i.1966; AD, A29942). Taroona, Tas., 3–6 m deep (Shepherd, 4.ii.1970; AD, A35171).


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

Distribution: Gunyah Beach, Coffin Bay Pen., S. Aust., to Western Port., Vic., around Tasmania, and Coffs Harbour, N.S.W. (Millar 1990, p. 379).

Taxonomic notes: N. naccarioides appears to be confined to rough-water coasts, occurring in summer months in shallow water.

References:

AGARDH, J.G. (1899). Analecta Algologica. Cont. V. Acta Univ. lund. 35, 1–160, Plates 1–3.

KYLIN, H. (1956). Die Gattungen der Rhodophyceen. (Gleerups: Lund.)

MAY, V. (1965). A census and key to the species of Rhodophyceae (red algae) recorded from Australia. Contr. N.S.W. natn. Herb. 3, 349–429.

MILLAR, A.J.K. & KRAFT, G.T. (1993). Catalogue of Marine and Freshwater Red Algae (Rhodophyta) of New South Wales, including Lord Howe Island, South-western Pacific. Aust. Syst. Bot. 6, 1–90.

MILLAR, A.J.K. (1990). Marine Red Algae of the Coffs Harbour Region, northern New South Wales. Aust. Syst. Bot. 3, 293–593.

WOMERSLEY, H.B.S. & ABBOTT, I.A. (1968). Structure and reproduction of Neoardissonea Kylin (Rhodophyta - Naccariaceae). J. Phycol. 4, 173–177.

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

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (28 June, 1996)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIB. Gracilarialse, Rhodymeniales, Corallinales and Bonnemaisoniales
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIIB 1996, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.


Illustration in Womersley Part IIIA, 1996: FIG. 160.

Figure 160 image

Figure 160   enlarge

Fig. 160. Naccaria naccarioides (A, AD, A29627; B–I, AD, A29942). A. Habit. B. Lateral branch with periaxial filaments from central axis and rhizoids at base. C. Branch with a carposporophyte. D. Apex with periaxial filaments and hairs. E. Transverse section of older branch. F. Lateral filaments with accessory clusters. G. Carpogonial branch with accessory filament on hypogynous cell. H. Mature carposporophyte with intermixed vegetative filaments. I. Spermatangia on a determinate lateral.


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