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Electronic Flora of South Australia Genus Fact Sheet

Genus KUETZINGIA Sonder 1845: 54

Phylum Rhodophyta – Family Rhodomelaceae – Tribe Amansieae

Thallus erect, complanately and oppositely to irregularly branched, branches flat, linear, corticated, the apices and margins inrolled or flat, midrib present, secondary thickened below; holdfast discoid to conical. Structure. Apex inrolled, pericentral cells 6, 2 large lateral cells and 2 smaller dorsal and 2 ventral cells, with or without 1–4 pseudopericentral cells. Medulla of a single layer of large cells, cortex 2–3 cells thick.

Reproduction: Gametophytes dioecious where known. Procarps formed on short determinate branchlets on branch margins or surfaces; cystocarps in similar positions. Spermatangial organs borne on unbranched trichoblasts on similar determinate branchlets, ovoid with a sterile basal cell.

Tetrasporangial stichidia single or clustered on margins at ends of paired endogenous lateral axes or on branch surfaces on outgrowths from endogenous laterals, linear, with 2 rows of paired tetrasporangia.

Type species: K. canaliculata (Greville) Sonder 1845: 54.

Taxonomic notes: An Australian endemic genus of 2 species, the type and K. angusta Harvey (1855a, p. 538; 1860, pl. 177) from Western Australia (Rottnest I. to Geraldton). K. natalensis J. Agardh from South Africa and K. pectinella (Harvey) Falkenberg (1901, p. 454) were placed in a new genus Plectrophora by Wilson & Kraft (2000), a name replaced by Kentrophora Wilson & Kraft in Henderson et al. 2001).

Kuetzingia is characterised by the opposite branching and endogenous laterals, 6 pericentral cells and single layer of larger medullary cells, and clustered marginal and submarginal stichidia.


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.)

HARVEY, W.H. (1855a). Some account of the marine botany of the colony of Western Australia. Trans. R. Jr. Acad. 22, 525–566.

HARVEY, W.H. (1860). Phycologia Australica. Vol. 3, Plates 121–180. (Reeve: London.)

HENDERSON, R.J.F., WILSON, S.M. & KRAFT, G.T. (2001). Kentrophora S.M. Wilson & Kraft, a new name for an algal genus in tribe Amansieae (Rhodomelaceae, Rhodophyceae). Austrobaileya 6, 175–176.

SONDER, O.G. (1845). Nova Algarum genera et species, quas in itinere ad oras occidentales Novae Hollandiae, collegit L. Preiss, Ph.Dr. Bot. Zeit. 3, 49–57.

WILSON, S.M. & KRAFT, G.T. (2000). Morphological and taxonomic studies of selected genera from the Tribe Amansieae (Rhodomelaceae, Rhodophyta). Aust. Syst. Bot. 13, 325–372.

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

Author: H.B.S. Womersley, S.M. Wilson & G.T. Kraft

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.

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