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Electronic Flora of South Australia Genus Fact Sheet

Genus METAGONIOLITHON Weber-van Bosse 1904: 86, 101

Phylum Rhodophyta – Class Florideophyceae – Order Corallinales – Family Corallinaceae – Subfamily Metagoniolithoideae

With the characteristics of the subfamily.

Lectotype species: M. charoides (Lamouroux) Weber-van Bosse (Manza 1937: 45) [= M. radiatum (Lamarck) Ducker].

Taxonomic notes: The three species of Metagoniolithon were monographed by Ducker (1979), who discussed the numerous synonyms of the species and their type specimens. Ducker (1979, p. 68) discussed and rejected records of the species from outside Australia.

References:

DUCKER, S.C. (1979). The genus Metagoniolithon Weber-van Bosse (Corallinaceae, Rhodophyta). Aust. J. Bot. 27, 67–101.

MANZA, A.V. (1937). The genera of articulated corallines. Proc. Nat. Acad. Sci. 23, 44–48,

WEBER-VAN BOSSE, A. (1904). Corallineae verae of the Malay Archipelago. In Weber-van Bosse & Foslie, M., The Corallinaceae of the Siboga Expedition. Siboga-Expeditae, Monogr. LXI, pp. 78–110, Plates 14–16. (Leiden.)

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

Author: H.B.S. Womersley & H.W. Johansen

Publication: Womersley, H.B.S. (28 June, 1996)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIB. Gracilarialse, Rhodymeniales, Corallinales and Bonnemaisoniales
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIIB 1996, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.

KEY TO SPECIES OF METAGONIOLITHON

1. Thallus epilithic, robust, branches 1–2 (–3) mm in diameter below, 400–800 µm in diameter below apices

M. radiatum

1. Thallus epiphytic, usually on Amphibolis, branches less than 1 mm in diameter below, mostly 200–300 µm in diameter above

2

2. Genicula with several to many clustered, spreading, branches, intergenicula of varying length and width

M. stelliferum

2. Genicula with 2–3 (–4) fastigiate branches, intergenicula of uniform length, often synchronous and even in appearance

M. chara


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