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Electronic Flora of South Australia Species Fact Sheet

Stylonema cornu-cervi Reinsch 1875: 40.

Phylum Rhodophyta – Class Bangiophyceae – Order Porphyridiales – Family Porphyridiaceae

Selected citations: Kajimura 1992b: 418.


Goniotrichum cornu-cervi (Reinsch) Hauck 1885: 519. Garbary et al. 1980b: 146, fig. lc, d. Hamel 1924: 450, fig. 6C, D. Levring 1953: 461. Tanaka 1952: 9, fig. 5.

Thallus (Fig. 1F) rose-red, 0.1–0.5 (–1) mm high, sparsely and irregularly branched from near the base, uniseriate for varying distances at the base and apex, with the basal cell somewhat elongate but unspecialised; epiphytic. Branches becoming 2–5 (–8) cells and 30–60 µm thick, with cells (Fig. 1G) more or less irregularly placed within the mucilaginous sheath and each with its own wall; cells ovoid, 5–8 µm in diameter, each with a central more or less stellate rhodoplast with a pyrenoid.

Reproduction: Reproduction by release of vegetative cells.

Type from the Adriatic Sea; location of type unknown.

Selected specimens: Gleeson Landing, Yorke Pen., S. Aust., on young Pterocladia capillacea, mid eulittoral, shaded (Womersley, 15.x.1989; AD, A59954). Port Noarlunga, S. Aust., on Caulerpa scalpelliformis, upper sublittoral on near-shore rocks (Womersley, 4.iv.1988; AD, A58644).

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

Distribution: Widespread in temperate seas.

In Australia, known from Gleeson Landing, Yorke Pen., and Port Noarlunga, S. Aust., and from Cronulla, N.S.W. and Port Douglas, Qld (Levring 1953, p. 461).

Taxonomic notes: This minute epiphyte is probably far more widespread than present records indicate.


GARBARY, D.J., HANSEN, G.I. & SCAGEL, R.F. (1980b). The marine algae of British Columbia and northern Washington: Division Rhodophyta (red algae), Class Bangiophyceae. Syesis 13, 137–195.

HAMEL, G. (1924). Floridées de France. Bangiales. Rev. Algol. 1, 278–292, 427–457.

HAUCK, F. (1885). Die Meeresalgen, Deutschlands und Oesterreichs. In Rabenhorst, L. (Ed.), Kryptogamen-Flora von Deutschland, Osterreich und der Schweiz. Vol. 2. (E. Kummer: Leipzig.)

KAJIMURA, M. (1992b). A new deep-water species of Stylonema (Stylonemataceae, Rhodophyta) from the Sea of Japan. Bot. Mar. 35, 415–418.

LEVRING, T. (1953). The marine algae of Australia. I. Rhodophyta: Goniotrichales, Bangiales and Némalionales. Arkiv för Bot. Ser. 2, 2, 457–530.

REINSCH, P.F. (1875). Contributiones ad Algologiam et Fungologiam. Vol. 1. (Leipzig.)

TANAKA, T. (1952). The systematic study of the Japanese Protoflorideae. Mem. Fac. Fish. Kagoshima Univ. 2, 1–92, Plates 1–23.

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

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (14 January, 1994)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIA, Bangiophyceae and Florideophyceae (to Gigartinales)
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIIA 1994, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.

Illustration in Womersley Part IIIA, 1994: FIG. 1F, G.

Figure 1 image

Figure 1   enlarge

Fig. 1. A, B. Porphyridium purpureum (AD, A59695). A. Cells in patches on Dictyota fenestrata. B. Cells each with a rhodoplast and central pyrenoid. C. Chroodactylon ornatum (AD, A19851). Thallus showing branching pattern and cell detail. D, E. Stylonema alsidii (AD, A58642). D. Branching pattern. E. Cells each with a stellate rhodoplast and pyrenoid. F, G. Stylonema cornu-cervi (AD,A58644). F. Thallus (on Caulerpa) showing cell arrangement. G. Cells each with a rhodoplast and pyrenoid. H. Erythrocladia irregularis (on AD, A31991 of Chaetomorpha linum). Thallus showing branching pattern of cells and cell detail. I. Erythrocladia subintegra (AD, A58641). Thallus showing branching pattern of cells and detail in a few.

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