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Electronic Flora of South Australia Species Fact Sheet

Lenormandia latifolia Harvey & Greville in Harvey 1847: 19.

Phylum Rhodophyta – Family Rhodomelaceae – Tribe Amansieae

Selected citations: J. Agardh 1890: 67; 1892: 169. Lucas 1929b: 51. Phillips 2002a: 199, figs 2, 11.


Lenormandia spectabilis var. latifolia (Harvey & Greville) Harvey 1863, synop.: xvi.

Aneuria latifolia (Harvey & Greville) De Toni 1924: 429. May 1965: 397. Womersley 1950: 189.

Lenormandiopsis latifolia (Harvey & Greville) Papenfuss 1967: 103. Ducker et al. 1977: 87. Huisman 1997: 206; 2000: 172. Norris 1987b: 82, figs 12–15. Shepherd & Womersley 1981: 368. Silva et al. 1996: 522.

Reproduction: Gametophytes dioecious. Procarps on lower cells of exogenous trichoblasts on the blade surface, the branchlets soon becoming polysiphonous. Carposporophytes with a basal fusion cell and branched gonimoblast with clavate terminal carposporangia 25–50 µm in diameter. Cystocarps (Fig. 169B) ovoid to pyriform with a thick stalk, 0.5–1 mm in diameter; pericarp ostiolate, corticated, 4–6 cells thick, often with a side bulge. Spermatangial organs (Fig. 169C) clustered on branches of surface trichoblasts, elongate-ovoid, 25–50 µm in diameter and L/D 3–4, with 1–3 sterile basal cells.

Tetrasporangial stichidia (Fig. 169D) in dense clusters scattered on the blade surface, stalked, elongate-ovoid to cylindrical, 200–280 µm in diameter and L/D 2–4, corticated, with paired tetrasporangia 60–100 µm in diameter.

Type from Swan R. colony, W. Aust. (Mylne); holotype in Herb. Harvey, TCD.

Selected specimens: Yanchep, W. Aust., drift (Womersley, 22.ix.1979; AD, A51270). Point Peron, W. Aust., drift (Huisman, 25.viii.1999; MELU, 49). Israelite Bay, W. Aust., drift (Wells, 10.xii.1974; AD, A46082). Elliston, S. Aust., on Osmundaria, 10 m deep (Shepherd, 18.x.1973; AD, A44207). Avoid Bay, S. Aust., on Osmundaria, drift (Womersley, 30.xi.1975; AD, A46831). Investigator Strait, S. Aust., 19 m deep (Watson, 11.i.1971; AD, A38510). Port Elliot, S. Aust., on Osmundaria, drift (Womersley, 17.x.1948; AD, A9390). Point Tinline, Kangaroo I., S. Aust., on Osmundaria, drift (O'Leary, 5.xi.1990; AD, A60774). Monument Reef, Kangaroo Head, Kangaroo I., S. Aust., 12 m deep (Layers, 14.ii.2000; AD, A68869). Cape Jaffa, S. Aust., drift (Womersley, 10.xii.1991; AD, A61561). 11 km off Cape Northumberland, S. Aust., on Epiglossum smithiae, 48 m deep (Shepherd, 6.v.1975; AD, A46321).

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

Distribution: Yanchep, W. Aust., to Cape Northumberland, S. Australia.

Taxonomic notes: Thallus (Fig. 169A) medium red to dark red-brown, with one (occasionally a few small lateral blades from the stipe) unbranched blade from a short stipe, blades usually 20–60 (–80) cm long and (5–) 10–20 cm broad, ovate to elongate, expanding from the short stipe upwards and broadest at half or more of the length, margin smooth, apex broadly tapering and rounded; midrib slight, not apparent in older blades, faintly visible in some young fronds. Holdfast discoid to divided, 2–5 mm across; usually epiphytic on Osmundaria, occasionally on

Epiglossum smithiae, possibly also epilithic. Structure. Apices usually lost from mature plants, axial cells with 5 pericentral cells, clear only close to the apex; midrib; medulla 2–3 cells thick, cells irregularly arranged, cortex 1–2 cells thick with surface cells angular, more-or-less isodiametric and 12–30 µm across in surface view. Rhombic areolation apparent only near apices of young blades. Trichoblasts scattered on thallus surface, 1–2.5 mm long. Rhodoplasts discoid, often becoming chained.

Lenormandia latifolia was returned to the genus Lenormandia by Phillips (2002a) since it differs from other species only in the blade being unbranched (apart from small lateral blades from the stipe). Also, young blades do show a central axis and rhombic areolation, both of which are not apparent in mature blades.

L. latifolia is common on rough-water coasts of most of southern Australia, but not on Victorian or Tasmanian coasts.


AGARDH, J.G. (1890). Till algernes systematik. Acta Univ. lund. 26(3), 1–125, Plates 1–3.

AGARDH, J.G. (1892). Analecta Algologica. Acta Univ. lund. 28, 1–182, Plates 1–3.

DE TONI, G.B. (1924). Sylloge Algarum omnium hucusque Cognitarum. Vol. 6. Florideae. (Padua.)

DUCKER, S.C., FOORD, N.J. & KNOX, R.B. (1977). Biology of Australian Seagrasses: the genus Amphibolis C. Agardh (Cymodoceaceae). Aust. J. Bot. 25, 67–95.

HARVEY, W.H. (1847). Nereis Australis, pp. 1–69, Plates 1–25. (Reeve: London.)

HARVEY, W.H. (1863). Phycologia Australica. Vol. 5, Plates 241–300, synop., pp. i-lxxiii. (Reeve: London.)

HUISMAN, J.M. (1997). Marine Benthic Algae of the Houtman Abrolhos Islands, Western Australia. In Wells, F.E. (Ed.) The Marine Flora and Fauna of the Houtman Abrolhos Islands, Western Australia, pp. 177–237. (W. Aust. Museum: Perth.)

HUISMAN, J.M. (2000). Marine Plants of Australia. (Univ. W. Aust. Press, Nedlands, W. Aust. & ABRS, Canberra, A.C.T.)

LUCAS, A.H.S. (1929b). A census of the marine algae of South Australia. Trans. R. Soc. S. Aust. 53, 45–53.

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

NORRIS, R.E. (1987b). Lenormandiopsis (Rhodomelaceae), newly recorded from Africa, with a description of L. nozawae sp. nov. and comparison with other species. Jap. J. Phycol. (Sôrui) 35, 81–90.

PAPENFUSS, G.F. (1967). Notes on algal nomenclature. V. Various Chlorophyceae and Rhodophyceae. Phykos 5, 95–105.

PHILLIPS, L.E. (2002a). Taxonomy and molecular phylogeny of the red algal genus Lenormandia (Rhodomelaceae, Ceramiales). J. Phycol. 38, 184–208.

SHEPHERD, S.A. & WOMERSLEY, H.B.S. (1981). The algal and seagrass ecology of Waterloo Bay, South Australia. Aquat. Bot. 11, 305–371.

SILVA, P.C., BASSON, P.W. & MOE, R.L. (1996). Catalogue of the Benthic Marine Algae of the Indian Ocean. (Univ. California Press: Berkeley.)

WOMERSLEY, H.B.S. (1950). The marine algae of Kangaroo Island. III. List of Species 1. Trans. R. Soc. S. Aust. 73, 137–197.

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

Author: by H.B.S. Womersley and L.E. Phillips

Publication: Womersley, H.B.S. (24 February, 2003)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIID. Ceramiales – Delesseriaceae, Sarcomeniaceae, Rhodomelaceae
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIID 2003, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.

Illustration in Womersley Part IIIA, 2003: FIG. 169.

Figure 169 image

Figure 169   enlarge

Fig. 169. Lenormandia latifolia (A–C, AD, A44207; D, AD, A68869). A. Habit. B. Cystocarps. C. Spermatangial organs on cluster of trichoblasts. D. Stichidia.

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