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Electronic Flora of South Australia Species Fact Sheet

Chondria harveyana (J. Agardh) De Toni 1903: 847.

Phylum Rhodophyta – Family Rhodomelaceae – Tribe Chondrieae

Selected citations: Adams 1983: 1; 1994: 331, pl. 114 upper right. Gordon-Mills & Womersley 1987: 541, figs 20D, 22F–J. Guiler 1952: 104. Lucas 1909: 40; 1929a: 21. Shepherd 1983: 83.


Chondriopsis harveyana J. Agardh 1863: 808; 1892: 155. Sonder 1880: 34. Tisdall 1898: 513. Wilson 1892: 168.

Chondriopsis arborescens J. Agardh 1892: 158. Tisdall 1898: 514. Wilson 1892: 168.

Chondria arborescens (J. Agardh) De Toni 1903: 837. Lucas 1909: 40. Lucas & Perrin 1947: 259.

Chondria dasyphylla sensu Harvey 1859b: 297 (in part). Womersley 1950: 186.

Laurencia dasyphylla sensu Harvey 1844b: 444 (in part); 1849: 85. Hooker & Harvey 1847: 401. Sonder 1853: 695.

Bolboclinium rhytidophloeum J. Agardh 1894: 79, nom. nudum. Falkenberg 1901: 697.

Thallus (Fig. 196A) dark red to brown-red, drying very dark, 10–40 (–120) cm high, irregularly radially branched for 3–4 orders, branches terete, usually with one to a few percurrent axes with often distant laterals, lower axes 0.7–1.5 (–2.5) mm in diameter, grading to lesser branchlets 300–500 µm in diameter. Holdfast discoid, becoming divided, 2–10 mm across, with lateral branchlets from the lowermost axis adhering by small haptera; epilithic or epiphytic on Amphibolis. Structure. Apices slightly pointed to just depressed, inner cortical cells often as a ring of larger cells (Fig. 196B) with surrounding rhizoids in older axes; epidermal cells 10–15 µm in diameter and L/D (5–) 9–17. Trichoblasts profuse in apical depressions, 0.5–1 mm long. Cell wall thickenings not observed. Cells with discoid rhodoplasts, chained in larger cells.

Reproduction: Gametophytes dioecious. Procarps situated several cells along trichoblasts. Carposporophytes with a basal fusion cell and branched gonimoblast with clavate terminal carposporangia 35–60 µm in diameter. Cystocarps (Fig. 196C) ovoid to slightly urceolate, 0.8–1.5 mm in diameter, short-stalked with a prominent, curved, spur (Fig. 196D); pericarp ostiolate, mostly 2 cells thick, lightly corticate basally. Spermatangial plates (Fig. 196E) discoid to cordate, 350–750w across, with 1 (–2) sterile marginal cells.

Tetrasporangia (Fig. 196F) in lesser branchlets, on (2–) 3 pericentral cells per axial cell, 90–140 µm in diameter.

Type from Georgetown, Tas. (Harvey, Alg. Aust. Exsicc. 158 I); holotype in LD, 37833; isotypes NSW, A3660 and elsewhere.

Selected specimens: King George Sound, W. Aust., (Harvey, Trav. Set 293; Herb. Harvey, TCD). N Spencer Gulf, S. Aust., 15 m deep (Shepherd, 5.ix.1973; AD, A44219). Port Elliot, S. Aust., drift (Womersley, 16.v.1985; AD, A55693). American R. inlet, Kangaroo I., S. Aust., 4–6 m deep off jetty (Womersley, 22.viii.1963; AD, A26963). Muston, Kangaroo I., S. Aust., 2–3 m deep (Womersley, 21.xi.1968; AD, A32946). Portsea, Port Phillip, Vic., drift (Lukey, 12.i.1956; AD, A23252). Shoreham, Western port, Vic., drift (Sinkora A1257, 29.x.1971; AD, A55330; MEL, 608527). San Remo, Vic., drift (Sinkora A2027, 27.xi.1974; AD, A55678; MEL, 608555). Port Sorell, N Tas., drift (Womersley, 9.xi.1982; AD, A55686). Gordon, Tas. (Perrin, 25.ix.1937; AD, A8503; HO, 66127). Bruny I. (opp. Gordon), Tas., 2–3 m deep (Brown, 10.x.1986; AD, A57832).

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

Distribution: King George Sound, W. Aust., and Spencer Gulf, S. Aust., to Westernport Bay, Vic. and around Tasmania.

New Zealand (Adams 1983, p. 1).

Taxonomic notes: Chondria harveyana is the longest, though moderately slender, species, confined largely to sheltered situations often where there is strong current flow.


ADAMS, N.M. (1983). Checklist of marine algae possibly naturalised in New Zealand. N.Z. J. Bot. 21, 1–2.

ADAMS, N.M. (1994). Seaweeds of New Zealand. (Cant. Univ. Press: Christchurch.)

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

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

AGARDH, J.G. (1894). Analecta Algologica. Cont. II. Acta Univ. lund. 30, 1–98, Plate 1.

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.)

GORDON-MILLS, E.M. & WOMERSLEY, H.B.S. (1987). The genus Chondria C. Agardh (Rhodomelaceae, Rhodophyta) in southern Australia. Aust. J. Bot. 35, 477–565.

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

HARVEY, W.H. (1844b). Algae of Tasmania. Lond. J. Bot. 3, 428–454.

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.)

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

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.

SHEPHERD, S.A. (1983). Benthic communities of upper Spencer Gulf, South Australia. Trans. R. Soc. S. Aust. 107, 69–85.

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.

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.

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. 196.

Figure 196 image

Figure 196   enlarge

Fig. 196. Chondria harveyana (A, F, AD, A32946; B, E, AD, A55693; C, D, AD, A26963). A. Habit. B. Transverse section of branch. C. Branches with cystocarps with basal spurs. D. Cystocarp with prominent spur. E. Spermatangial plate. F. Branches with tetrasporangia.

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