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Electronic Flora of South Australia Species Fact Sheet

Lenormandia marginata Hooker & Harvey in Harvey 1847: 19, pl. 20; 1859b: 295; 1862a; pl. 235; 1863, synop.: xvi.

Phylum Rhodophyta – Family Rhodomelaceae – Tribe Amansieae

Selected citations: J. Agardh 1863: 1107. De Toni 1903: 1115. Falkenberg 1901: 461, pl. 8 figs 7–12. Fuhrer et al. 1981: pls 37, 38. Guiler 1952: 106. Hooker & Harvey 1847: 398. Kützing 1849: 849; 1865: 4, pl. 8d-h. Kylin 1956: fig. 435E. Levring 1946: 226. Lucas 1909: 46; 1929a: 23. Lucas & Perrin 1947: 304, fig. 144. May 1965: 397. Phillips 2002a: 195, figs, 2, 8. Schmitz & Falkenberg 1897: 471. Sonder 1853: 696; 1880: 32. Tisdall 1898: 513. Wilson 1892: 166.

Thallus (Fig. 167A) medium to dark red-brown, 5–15 (–20) cm high, erect, complanately and marginally branched, usually bipinnate with primary and secondary blades 4–10 cm long and 5–17 (–20) mm broad centrally, basally narrow and tapering to rounded apices; midrib distinct to inconspicuous; tertiary blades borne irregularly marginally, mostly 5–20 mm long and 2–6 mm broad; young blade margins usually with minute dentations (Fig. 167B), absent from older blades. Holdfast discoid, 1–3 mm across; epilithic. Structure. Apices cleft (Fig. 167C), apical cell hemispherical, 30–40 µm in diameter (including thick walls), axial cells cutting off 5 pericentral cells (Fig. 167D), 2 lateral ones on each side (one larger than the other) and a ventral cell; pseudopericentral cells generally absent, but occasionally one cut off from the dorsal pericentral cell and inserted into the ring, with the lateral cells dividing to form the medulla mostly one cell broad (3–4 cells broad at the margins) in the wings; cortex 1 (–2) cells thick. Surface appearance of the blades showing rhombic areolation of the medullary cells, overlain by angular cortical cells, irregularly arranged and 14–30 µm across. Trichoblasts occasional, adventitious from surface cortical cells, much branched, 1–1.5 mm long, basal cells 30–40 µm in diameter and L/D 1–2, greatly reduced when associated with sexual organs. Cortical cells uninucleate, medullary cells multinucleate; rhodoplasts discoid, chained in larger cells.

Reproduction: Gametophytes dioecious. Procarps borne on reduced adventitious trichoblasts associated with the marginal dentations, occasionally also on the blade surface. Carposporophytes with a basal fusion cell, much branched gonimoblast and elongate-clavate carposporangia 20–35 (–40) µm in diameter. Cystocarps (Fig. 167E) short stalked, globose to ovoid, single or in small marginal groups, occasionally on the surface, 700–1100 µm in diameter; pericarp 5–10 cells thick, with a small ostiole. Spermatangial heads (Fig. 167F) on the blade surface on reduced trichoblasts, with unicellular pedicels, ovoid, 70–100 µm in diameter and L/D 1–2.

Tetrasporangial stichidia (Fig. 167G, H) marginal, single, occasionally to frequently on the blade surface, 1–2 (–3) mm long and 250–360 µm broad, slightly compressed, corticated, with sporangia in 2 longitudinal rows, 2 per segment, 70–100 µm in diameter.

Type from mouth of the Tamar, Tasmania (Gunn); lectotype in TCD; a specimen in BM labelled "n. sp.", from "V.D. Land" may be the holotype but is not labelled "mouth of the Tamar".

Selected specimens: Waterloo Bay (Elliston), S. Aust., 13 m deep (Shepherd, 26.ii.1978; AD, A55004). West Point, Eyre Pen., S. Aust., 10–12 m deep (Shepherd, 25.x.1969; AD, A34927). Port Elliot, S. Aust., drift (Womersley, 24.vii.1949; AD, A11101). Nora Creina, S. Aust., 3–6 m deep (Kraft 4951, 18.ii.1974; MELU and AD, AD46024). 13 km off Cape Northumberland, S. Aust., 61 m deep (Shepherd, 7.v.1975; AD, A46288). Point Roadknight, Vic., drift (Womersley, 6.vi.1953; AD, A18775). Gabo I., Vic., 13 m deep (Shepherd, 14.ii.1973; AD, A43336). Barrel Rock, Georgetown, Tas., 12–16 m deep (Edgar, 19.x.1994; AD, A63853). Pirates Bay, Eaglehawk Neck, Tas., 9–12 m deep (Gowlett-Holmes, 31.x.1994; AD, A64059). Painted Cliffs, Maria I., Tas., 6–8 m deep (Edgar, 22.iii.2000; AD, A68549). N end Governor I., Bicheno, Tas., 8–16 m deep (Edgar, 23.x.1994; AD, A63832). Tinderbox, Tas., 7–10 m deep (Kraft & Sanderson, 20.xii.1990; MELU, K9246). Ninepin Point, Tas., 7–12 m deep (Edgar, 1.v.1999; AD, A68218).

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

Distribution: Waterloo Bay, S. Aust., to Gabo I., Vic., and around Tasmania.


AGARDH, J.G. (1863). Species Genera et Ordines Algarum. Vol. 2, Part 3, pp. 787–1291. (Gleerup: Lund.)

DE TONI, G.B. (1903). Sylloge Algarum omnium hucusque Cognitarum. Vol. 4. Florideae. Sect. 3. pp. 775–1521 + 1523–1525. (Padua.)

FALKENBERG, P. (1901). Die Rhodomelaceen des Golfes von Neapel und der angrenzenden Meeres-abschnitte. Fauna und Flora des Golfes von Neapel. Monogr. 26. (Friedländer: Berlin.)

FUHRER, B., CHRISTIANSON, I.G., CLAYTON, M.N. & ALLENDER, B.M. (1981). Seaweeds of Australia. (Reed: Sydney.)

GUILER, E.R. (1952). The marine algae of Tasmania. Checklist with localities. Pap. Proc. R. Soc. Tasmania 86, 71–106.

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

HARVEY, W.H. (1859b). Algae. In Hooker, J.D., The Botany of the Antarctic Voyage. III. Flora Tasmaniae. Vol. II, pp. 282–343, Plates 185–196. (Reeve: London.)

HARVEY, W.H. (1862a). Phycologia Australica. Vol. 4, Plates 181–240. (Reeve: London.)

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

HOOKER, J.D. & HARVEY, W.H. (1847). Algae Tasmanicae. Lond. J. Bot. 6, 397–417.

KÜTZING, F.T. (1849). Species Algarum. (Leipzig.)

KÜTZING, F.T. (1865). Tabulae Phycologicae. Vol. 15. (Nordhausen.)

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

LEVRING, T. (1946). A list of marine algae from Australia and Tasmania. Acta Horti gothoburg 16, 215–227.

LUCAS, A.H.S. & PERRIN, F. (1947). The Seaweeds of South Australia. Part 2. The Red Seaweeds. (Govt Printer: Adelaide.)

LUCAS, A.H.S. (1909). Revised list of the Fucoideae and Florideae of Australia. Proc. Linn. Soc. N.S.W. 34, 9–60.

LUCAS, A.H.S. (1929a). The marine algae of Tasmania. Pap. Proc. R. Soc. Tasm. 1928, 6–27.

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.

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

SCHMITZ, F. & FALKENBERG, P. (1897). Rhodomelaceae. In Engler, A. & Prantl, K., Die natürlichen Pflanzenfamilien. T.1. Abt. 2, pp. 421–480. (Englemann: Leipzig.)

SONDER, O.W. (1853). Plantae Muellerianae. Algae. Linnaea 25, 657–709.

SONDER, O.W. (1880). In Mueller, F., Fragmenta Phytographiae Australiae. Supplementum ad volumen undecinum: Algae Australianae hactenus cognitae, pp. 1–42, 105–107. (Melbourne.)

TISDALL, H.T. (1898). The algae of Victoria. Rep. 7th Meet. Aust. Ass. Adv. Sci., Sydney, 1898, pp. 493–516.

WILSON, J.B. (1892). Catalogue of algae collected at or near Port Phillip Heads and Western Port. Proc. R. Soc. Viet. 4, 157–190.

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. 167.

Figure 167 image

Figure 167   enlarge

Fig. 167. Lenormandia marginata (A, AD, A64059; B, AD, A68549; C, G, AD, A63853; D, AD, A18775; E, H, AD, A68218; F, AD, A63832). A. Habit. B. Apex of branch with dentations. C. Apical cleft and segmentation. D. Transverse section of young branch with axial and 5 pericentral cells. E. Section of cystocarp (part) and carposporophyte. F. Spermatangial organs on trichoblasts. G. Stichidia on margin of branch. H. Stichidium with paired tetrasporangia.

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